PROSPECTUS SUMMARY

The following prospectus summary contains a summary of basic information contained elsewhere in this prospectus. It does not contain all the information that may be important to you. For a more complete understanding, we encourage you to read this entire prospectus carefully, including the “Risk Factors” section and the financial statements and related notes. Unless otherwise indicated or the context otherwise requires, all references to “the Company”, “MRC”, “we”, “us”, and “our” refer to MRC Global Inc. and its consolidated subsidiaries.

Our Company

We are the largest global industrial distributor of pipe, valves and fittings (“PVF”) and related products and services to the energy industry based on sales and hold the leading position in our industry across each of the upstream, midstream and downstream sectors. We offer more than 150,000 stock keeping units (“SKUs”), including an extensive array of PVF, oilfield supply, automation, instrumentation and other general and specialty industry supply products from over 12,000 suppliers. Through our North American and International segments, we serve more than 12,000 customers through over 400 service locations throughout North America, Europe, Asia and Australasia.

Our PVF and oilfield supplies are used in mission critical process applications that require us to provide a high degree of product knowledge, technical expertise and value added services to our customers. We seek to provide best-in-class service and a one-stop shop for our customers by satisfying the most complex, multi-site needs of many of the largest companies in the energy and industrial sectors as their primary PVF supplier. We provide services such as product testing, manufacturer assessments, multiple daily deliveries, volume purchasing, inventory and zone store management and warehousing, technical support, just-in-time delivery, truck stocking, order consolidation, product tagging and system interfaces customized to customer and supplier specifications for tracking and replenishing inventory, which we believe result in deeply integrated customer relationships. We believe the critical role we play in our customers’ supply chain, together with our extensive product offering, broad global presence, customer-linked scalable information systems and efficient distribution capabilities, serve to solidify our long-standing customer relationships and drive our growth. As a result, we have an average relationship of over 20 years with our largest 25 customers.

We believe that growth in PVF and industrial supply spending within the energy industry is likely to continue. Several factors have driven the long-term growth in spending, including underinvestment in North American energy infrastructure, production and capacity constraints, and market expectations of future improvements in the oil, natural gas, refined products, petrochemical and other industrial sectors. In addition, the products we distribute are often used in extreme operating environments, leading to the need for a regular replacement cycle. Approximately two-thirds of our sales are attributable to multi-year maintenance, repair and operations (“MRO”) arrangements. Our average annual retention rate for these contracts since 2000 is 95%. We consider MRO arrangements to be normal, generally repetitive business that primarily addresses the recurring maintenance, repair or operational work to existing energy infrastructure. Project activities, including facility expansions, exploration or new construction projects, are more commonly associated with a customer’s capital expenditures budget. Such projects can be more sensitive to global oil and natural gas prices and general economic conditions.

We distribute products globally, including in PVF intensive, rapidly expanding oil and natural gas exploration and production (“E&P”) areas such as the Bakken, Barnett, Eagle Ford, Fayetteville, Haynesville, Marcellus, Niobrara and Utica shales in North America. Furthermore, our Canadian subsidiary Midfield Supply ULC (“MRC Midfield”), one of the two largest Canadian PVF distributors based on sales, provides PVF products to oil and natural gas companies operating primarily in

Western Canada, including the Western Canadian Sedimentary Basin, Alberta Oil Sands and heavy oil regions. These regions are still in the early stages of infrastructure investment with numerous companies seeking to facilitate the long-term harvesting of difficult to extract and process crude oil. Beyond North America, our acquisitions of Transmark Fcx Group BV (together with its subsidiaries, “MRC Transmark”) and Stainless Pipe and Fittings Australia Pty Ltd. (“MRC SPF”) have provided us with a well-established and integrated platform for international growth and further positioned us to be the leading global PVF distributor to the energy industry. The following map illustrates our global presence:

MRC Locations – 18 Countries

Our business is characterized by diversity in the industry sectors and regions we serve and in the products we supply. The following charts summarize our revenue by sector, geography and product, across both our North American and International segments, for the year ended December 31, 2011:

Due to the demanding operating conditions in the energy industry, high costs and safety risks associated with equipment failure, customers prefer highly reliable products and vendors with established qualifications, reputation and experience. As our PVF products typically are mission critical yet represent a fraction of the total cost of the project, our customers often place a premium on service and high reliability given the high cost to them of maintenance or project delays. Our products are typically used in high-volume, high-stress and abrasive applications or in high-pressure, extreme temperature and high-corrosion applications.

With over 400 global service locations servicing the energy and industrial sectors, we are an important link between our more than 12,000 customers and our more than 12,000 suppliers. We add value to our customers and suppliers in a number of ways:

Our Industry

We primarily serve the global oil and natural gas industry, generating approximately 90% of our sales from supplying products and various services to customers throughout the energy industry. In each of 2010 and 2011, as part of the broader global economic recovery, our customers’ capital and operating expenditures increased as compared to 2009, although overall oil and natural gas drilling and completion spending still remained below 2006 and 2007 levels. Over the longer term, we expect to continue to see customer spending increase due to a variety of global supply and demand fundamentals, a slowly improving global economy, shale E&P activity and longer term outlooks for oil and natural gas prices.

During the last several years, the global energy industry has experienced a number of favorable supply and demand dynamics that have led our customers to make substantial investments to expand their physical infrastructure and processing capacities. On the demand side, world energy markets are benefiting from:

At the same time, global energy supply has been generally constrained due to increasing scarcity of natural resources, declining excess capacity of existing energy assets, geopolitical instability, natural and other unforeseen disasters and more stringent regulatory, safety and environmental standards. These demand and supply dynamics underscore the need for investment in energy infrastructure and increases in global exploration, extraction, production, transportation, refining and processing of energy inputs. Within the U.S., the energy industry has benefited from technological developments that have enabled more recent significant increases in U.S. oil production and natural gas supply. The U.S. Energy Information Administration (“EIA”) expects that U.S. crude oil production, which increased 2.1% in 2010 and 2.1% in 2011, will increase by a further 4.3% in 2012, driven by increased oil-directed drilling activity, particularly in unconventional shale formations. EIA expects that U.S. marketed natural gas production, which increased by 3.5% in 2010 and 7.8% in 2011, will grow further by 2.2% in 2012. Finally, as companies in the energy industry, both in North America and internationally, continue to focus on improving operating efficiencies, they have been increasingly looking to outsource their procurement and related administrative functions to distributors such as MRC.

Our Strengths

Global Market Leader with Worldwide Branch Network and Significant Scale.    We are the leading global industrial distributor of PVF and related products to the energy industry based on sales, with nearly twice the sales of our nearest competitor in 2011. The benefits of our size and international presence include:

Proven Track Record of Successfully Identifying, Executing and Integrating Acquisitions.    We have demonstrated our ability to successfully integrate acquired companies in 26 acquisitions since 2000, collectively representing approximately $1.8 billion in sales in the respective years of acquisition, in addition to the business combination between McJunkin Corporation and Red Man Pipe & Supply Co. (“Red Man”) in October 2007 (which had approximately $2 billion of revenue in the year of merger). Our operating scale and integration capabilities have also enabled us to realize important synergies, while minimizing execution risk. All of our North American acquisitions have been integrated onto a single IT platform, which facilitates more efficient pricing, sourcing and inventory management.

High Level of Integration and MRO Contracts with a Global Energy Customer Base.    We have a diversified global customer base with over 12,000 active customers. We serve as the sole or primary supplier in all sectors or in specified sectors or geographies for many of our customers. Our largest 25 customers, with whom we have had relationships for more than 20 years on average, accounted for approximately half of our sales for 2011, while no single customer accounted for more than 6% of our sales during that period. We enjoy fully integrated relationships, including interconnected technology systems and daily communication, with many of our customers, and we provide an extensive range of integrated and outsourced supply services, allowing us to market a “total transaction value” concept as opposed to individual product prices. We sell products to our major customers through multi-year MRO contracts, which are typically renegotiated every three to five years. Although there are typically no guaranteed minimum purchase amounts under these contracts, these MRO customers, representing approximately two-thirds of our 2011 sales with an average annual retention rate of over 95% since 2000, provide a relatively stable revenue stream and help mitigate the effect of industry downturns on our business.

Business and Geographic Diversification in High-Growth Areas.    We are well diversified across the upstream, midstream and downstream operations of the energy industry, as well as through our participation in selected industrial sectors. This diversification affords us some measure of protection in the event of a downturn in any one sector while providing us the ability to offer a “one stop” solution for our integrated energy customers. In our North American operating segment, our more than 175 branch locations are located near major hydrocarbon and refining regions, including rapidly expanding oil and natural gas E&P areas, such as the Bakken, Barnett, Eagle Ford, Fayetteville, Haynesville, Marcellus, Niobrara and Utica shales. In these non-conventional shale areas, a typical well can produce three to five times the revenue for us than a conventional well due to the greater length and the higher quality of pipe and related PVF products we furnish. In our International

operating segment, we have a network of over 30 branch locations throughout Europe, Asia and Australasia in close proximity to major projects in liquefied natural gas (“LNG”), mining and mineral processing and other high-growth energy and infrastructure development areas.

Strategic Supplier Relationships.    We have extensive relationships with our suppliers and have key supplier relationships dating back in certain instances over 60 years. Approximately 50% of our total purchases for the year ended December 31, 2011 were from our largest 25 suppliers. We believe our customers view us as an industry leader in part due to the formal processes we use to evaluate vendor performance and product quality. We employ individuals who specialize in conducting manufacturer assessments both domestically and internationally and who are certified by the International Registry of Certificated Auditors. Our Supplier Registration Process, which allows us to maintain the MRC ASL, serves as a significant strategic advantage to us in developing, maintaining and institutionalizing key supplier relationships. For our suppliers, inclusion on the MRC ASL represents an opportunity for them to increase their product sales to our customers. The SRP also adds value to our customers, as they collaborate with us regarding specific manufacturer performance, our past experiences with products and the results of our on-site manufacturer assessments.

IT Platform Focused on Customer Service.    Our proprietary, integrated, scalable, customer-linked and highly customized information systems support our business. A wide area network links these systems and our more than 4,000 employees. We operate a single information and operating system (“SIMS”) for all of our North American locations and a separate, Oracle-based system for our other international locations (other than those we have recently acquired). This enables real-time access to our business resources, including customer order processing, purchasing and material requests, distribution requirements planning, warehousing and receiving, inventory control and accounting and financial functions. In 2011, we had over 1.6 million electronic data interchange customer transactions (including purchase orders, advance ship notices, electronic funds transfer and internet ordering), compared to less than 700,000 in 2000. We have over 4 million customer part numbers cross referenced and integrated into MRC’s IT systems. Significant elements of our systems include firm-wide pricing controls, resulting in disciplined pricing strategies, advanced scanning and customized bar-coding capabilities, allowing for efficient warehousing activities at customer as well as our own locations, and significant levels of customer-specific integrations. We believe that the customized integration of our customers’ systems into our own information systems has increased customer retention by reducing our customers’ expenses, resulting in switching costs when our customers compare us to alternative sources of supply. Typically, smaller regional and local competitors do not have IT capabilities that are as advanced as ours, which we believe further differentiates us from our competition.

Highly Efficient, Flexible Operating Structure Drives Significant Free Cash Flow Generation.    We place a particular emphasis on practicing financial discipline as evidenced by our strong focus on return on net assets, minimal maintenance capital expenditures and high free cash flow generation. Our disciplined cost control, coupled with our active asset management strategies and IT and services capabilities, result in a business model exhibiting a high degree of operating leverage. As is typical with the flexibility associated with a distribution operating model, our variable cost base includes substantially all of our cost of goods sold and a large portion of our operating costs. Furthermore, our total capital expenditures were approximately 0.4% of our sales for the year ended December 31, 2011. This cost structure allows us to adjust effectively to changing industry dynamics.

Experienced and Motivated Management Team.    Our executive management team averages approximately 30 years of experience in the oilfield and industrial supply business, the majority of which has been with MRC or its predecessors. Employees own approximately 8% of our Company, including approximately 5% that is owned by executive and senior management, either directly or indirectly through their equity interests in PVF Holdings LLC (“PVF Holdings”), our largest shareholder.

Our Strategy

Our goal is to grow our market position as the largest global industrial distributor of PVF and related products to the energy industry.

Increase Market Share Organically and Grow Business with Current Customers.    We are committed to expanding existing deep relationships with our current customer base while concurrently striving to secure new customers. To accomplish this, we are focused on providing a global “one stop” PVF procurement solution across the upstream, midstream and downstream sectors of the energy industry, maximizing bundling opportunities by leveraging our extensive product offering and increasing our penetration of existing customers’ new multi-year projects. Since 2000, we have retained in excess of 95% of our MRO contracts.

The migration of existing customer relationships to sole or primary sourcing arrangements is a core strategic focus. We seek to position ourselves as the sole or primary provider of a broad complement of PVF products and services for a particular customer, often by sector or region, or in certain instances across all of a customer’s global upstream, midstream and downstream operations. Several of our largest customers have recently switched to sole or primary sourcing contracts with us. Additionally, we believe that other significant opportunities exist to expand our deep customer and supplier relationships and thereby increase our market share. There is also a significant opportunity to extend our current North American MRO contracts internationally as well as bundle certain products, most notably pipe, flanges, fittings and other products (“PFF”), into MRC Transmark’s existing customer base, branch network and more valve-focused product platform.

We also aim to increase our penetration of our existing customers’ new projects. For example, while we often provide nearly 100% of the PVF products for certain customers under MRO contracts, increased penetration of those customers’ new downstream and midstream projects remains a strategic priority.

Increase Recurring Revenues through Integrated Supply and MRO Contracts.    We have entered into, and continue to pursue, integrated supply and MRO contracts with certain of our customers. Under these arrangements, we are typically the sole or primary source provider of the upstream, midstream or downstream requirements of our customers. In certain instances, we are the sole or primary source provider for our customers across all the energy sectors or North American geographies within which the customer operates. We will seek to extend these contracts internationally.

In addition, our customers have, over time, increasingly moved toward centralized PVF procurement management at the corporate level rather than at individual local units. These developments are partly due to significant consolidation among our customer base. Sole or primary sourcing arrangements allow customers to focus on their core operations and provide economic benefits by generating immediate savings for the customer through administrative cost and working capital reductions, while providing for increased volumes, more stable revenue streams and longer term visibility for us. We believe we are well positioned to obtain these arrangements due to our leadership position and technical expertise, geographically diverse branch network, breadth of available product lines, value added services and scale in purchasing and existing deep relationships with customers and suppliers.

We also have both exclusive and non-exclusive MRO contracts in place. Our customers are increasing their capital and operating spending, which is being driven by aging infrastructure, increasing regulatory, safety and environmental requirements, the increased utilization of existing facilities and the decreasing quality of energy feedstocks. Our customers benefit from MRO arrangements through lower inventory investment and the reduction of transaction costs associated

with the elimination of the bid submission process, and our Company benefits from the recurring revenue stream that occurs with an MRO contract in place. We believe there are additional opportunities to utilize MRO arrangements through our “one-stop” PVF solution, both in North America and globally, for servicing the requirements of our customers. We are actively pursuing such opportunities.

Capitalize on Significant Growth in U.S. Shale Activity.    The development of shale oil and gas in the U.S. has been rapid over the past several years. Natural gas is a major source of energy in the U.S., providing about 25% of total U.S. energy according to the Department of Energy. Shale gas, as a percentage of total natural gas production, has, in turn, rapidly increased from less than 2% of total U.S. natural gas production in 2001 to 30% in 2011 and is projected to increase to 49% by 2035 according to the EIA. Over the past ten years, technological advances in directional drilling and fracturing technologies have enabled the production of oil and natural gas products in previously underdeveloped U.S. oil and natural gas shale basins. As a result, unconventional E&P activity in shale regions has accelerated significantly and production levels have increased. We believe that PVF expenditures for unconventional shale plays can amount to as much as five times that required for comparable conventional plays and have positioned ourselves to benefit from this increase in unconventional E&P and midstream infrastructure activity by investing in these shale regions.

In addition, we are well positioned to continue to benefit from the more recent marked shift in E&P activity in the U.S. towards oil production. During 2007, approximately 17% of E&P activity in the U.S. consisted of oil drilling and 83% consisted of natural gas drilling. During the fourth quarter of 2011, approximately 55% of E&P activity in the U.S. consisted of oil drilling and 45% consisted of natural gas drilling. This is the highest percentage of oil drilling in the U.S. in approximately two decades.

Capitalize on Anticipated Midstream MRO Activity.    Our major midstream customers face new safety regulations requiring additional inspection and hydro-testing requirements for U.S. pipelines. On January 3, 2012, the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 (the “Pipeline Act”) was enacted into law. The Pipeline Act is expected to accelerate PVF testing and replacement as well as require midstream participants to install additional automatic or remote-controlled shut-off valves and excess flow valves in new or replaced transmission pipelines. In addition, approximately 60% of the 178,000 miles of pipeline in the U.S. is over 40 years old. Recent initiatives from several of our major customers suggest a longer term trend towards continued replacement of this aged pipeline infrastructure and related MRO spending. Our acquisition of LaBarge Pipe & Steel Company (“LaBarge”), along with our increased focus and investments in line pipe and its attendant PVF and industrial supply products, uniquely positions us to benefit from increased pipeline replacement and MRO spending in the midstream sector over the next 10 years.

Further Penetrate the Canadian Oil Sands, Particularly the Downstream Sector.    The Canadian Oil Sands region and its attendant downstream sector represent long-term growth areas for our Company. The Canadian Association of Petroleum Producers and Energy Resources Conservation Board estimate that Oil Sands capital expenditures increased by approximately 18% in 2010 to $13 billion and projects that expenditures will increase to approximately $20 billion by 2016, a compound annual growth rate (“CAGR”) of 7.4%, which we believe will generate significant PVF expenditures. While MRC Midfield has historically focused on the upstream and midstream sectors in Canada, we believe that a significant opportunity exists to continue to penetrate the Canadian Oil Sands and downstream industries, which include the upgrader, refinery, petrochemical and other industrial processing sectors. Our sales to the Canadian Oil Sands region and downstream sectors increased by 45% to $361 million from 2010 to 2011. Additionally, we believe there is also a significant opportunity to penetrate the Canadian Oil Sands extraction sector involving in-situ recovery methods. We have made targeted inventory and facility investments in Canada, including a 74,000 square foot distribution center located near Edmonton and a 16,000 square foot warehouse near Fort McMurray, to address this opportunity.

Expanding Globally Through Positioning on EPC Projects.    Projects are a growing part of our business and represent approximately one-third of our sales. In 2011, 15% of our revenue was derived from infrastructure projects through engineering, procurement and construction (“EPC”) firms and 19% was derived from drilling/production projects. These projects can be either brownfield or greenfield in nature, with the latter representing new construction and the former representing projects that are more refurbishment or replacement in scope. Infrastructure projects are an important part of all the sectors we serve but are typically more active in our downstream and midstream sectors. Due to our strong MRO position in these sectors, we are often our customers’ choice for brownfield expansion in these facilities. We are actively looking to increase our participation in new greenfield projects both domestically and internationally by working closely with both end customers and EPC contractors.

Expand into New Geographies and Adjacent Sectors.    We intend to continue to selectively establish new branches to facilitate our expansion into new geographies and enter adjacent sectors where extreme operating environments generate high PVF product replacement rates. We continue to evaluate establishing branches and service and supply centers in select domestic and international regions as well as identifying existing branches for overlap and strategic elimination.

We believe that an attractive opportunity exists to further expand our International operating segment. We continue to actively evaluate opportunities to selectively establish new branches in order to grow with our existing global customer base or to develop new customer relationships and extend our offering to key international markets, particularly in Asia, Europe, Australasia and the Middle East. The current installed base of energy infrastructure internationally, including the upstream, midstream and downstream sectors, is significantly larger than in North America, and, as a result, we believe represents an attractive long term opportunity for us. Since 2006, when 100% of our revenues were generated in the U.S., we have expanded into Canada, Europe, Asia and Australasia. In the year ended December 31, 2011, approximately 20% of our revenues were generated outside the U.S.

We also believe opportunities exist for expansion into new and under-penetrated sectors where PVF products are used in specialized or highly corrosive applications. These sectors include pulp and paper, waterworks, food and beverage and other general industrial sectors, in addition to other energy sectors such as power generation, mining and mineral processing, solar, LNG, coal, nuclear, ethanol and desalinization facilities.

Pursue Selective Strategic Acquisitions and Investments.    We continue to seek opportunities to strengthen our franchise through selective acquisitions and strategic investments. In particular, we will consider investments that enhance our presence in the energy infrastructure sector and enable us to leverage our existing operations, either through acquiring new branches or by acquiring companies offering complementary products or geographic breadth. Our industry remains highly fragmented while our customers and suppliers continue to consolidate. We believe a significant number of small and larger acquisition opportunities remain that offer favorable synergy potential and attractive growth characteristics. We intend to focus on utilizing our global operating scale and integration capabilities to further realize important synergies while minimizing execution risk.

Continued Focus on Operational Efficiency.    We strive for continued operational excellence. Our branch managers, regional management and corporate leadership team continually examine branch profitability, working capital management and return on managed assets and utilize this information to optimize global, regional and local strategies, reduce operating costs and maximize cash flow generation.

To improve efficiencies and profitability, we work to leverage operational best practices, optimize our vendor relationships, purchasing and inventory levels, and source inventory internationally when appropriate. As part of this strategy, we have integrated our purchasing functions into a central procurement function and believe we have developed strong relationships with vendors that value our international footprint, large sales force and volume purchasing capabilities. Because of this, we are often considered the preferred distribution channel.

Recent Developments

Preliminary First Quarter 2012 Results

We expect to report the following results for each of sales, net income, Adjusted EBITDA and total indebtedness for the three months ending March 31, 2012 and as of March 31, 2012, as applicable:

Expected results for the three months ending March 31, 2012 primarily reflect continued strength in each of the upstream, midstream and downstream sectors of our business, including strong drilling activity in North America, particularly in the shale and conventional oil regions. The results estimated above include an approximately $1.7 million write-off of deferred financing costs, which we expect to record in the three months ending March 31, 2012 in connection with the refinancing of our ABL Credit Facility. The expected increase in total indebtedness at March 31, 2012 primarily reflects the acquisition of OneSteel Piping Systems and working capital growth.

Management has prepared the estimates presented above in good faith based upon our internal reporting and expectations as of and for the three months ending March 31, 2012. These estimated ranges are preliminary, unaudited, subject to completion, reflect our current good faith estimates and may be revised as a result of results posted during the remainder of the quarter and management’s further review of our results. We and our auditors have not completed our normal quarterly review procedures as of and for the three months ending March 31, 2012, and there can be no assurance that our final results for this quarterly period will not differ from these estimates. Any such changes could be material. During the course of the preparation of our consolidated financial statements and related notes as of and for the three months ending March 31, 2012, we may identify items that would require us to make material adjustments to the preliminary financial information. These estimates should not be viewed as a substitute for full interim financial statements prepared in accordance with GAAP. In addition, these preliminary estimates as of and for the three months ending March 31, 2012 are not necessarily indicative of the results to be achieved for the remainder of 2012 or any future period. Our consolidated financial statements and related notes as of and for three months ending March 31, 2012 are not expected to be filed with the SEC until after this offering is completed.

Adjusted EBITDA is a non-GAAP measure within the rules of the SEC. The most closely comparable GAAP measure is net income. The following table reconciles Adjusted EBITDA to net income for the ranges presented above for the three months ending March 31, 2012 (estimated) and for the three months ended March 31, 2011 (actual). For more information about our use of Adjusted EBITDA, see footnote 2 to “—Summary Consolidated Financial Information” included elsewhere in this prospectus.

Global ABL Facility

On March 27, 2012, we entered into a new multi-currency Global ABL Facility (the “Global ABL Facility”) which replaced our existing North American ABL Credit Facility, our European Transmark term loan and revolving credit facility and our UK overdraft facility. The administrative agent and collateral agent for the Global ABL Facility is Bank of America, N.A., and the co-syndication agents of the Global ABL Facility are Barclays Bank PLC and Wells Fargo Capital Finance LLC. The five-year Global ABL Facility contains up to US$1.25 billion of total revolving credit facilities, including US$1.025 billion in the United States, US$145 million in Canada, US$12 million in the United Kingdom, US$52 million in Australia, US$9 million in the Netherlands and US$7 million in Belgium. The facility also contains an accordion feature that allows us to increase the principal amount of the facility by up to US$300 million.

The Global ABL Facility is primarily secured by all of our receivables, inventory and related assets in the relevant countries. Our ability to borrow in each jurisdiction under the facility is limited by a borrowing base in that jurisdiction equal to 85% of eligible receivables, plus the lesser of 70% of eligible inventory and 85% of appraised net orderly liquidation value of the inventory. The facility initially bears interest at LIBOR plus an initial margin of 1.75%, though from and after September 1, 2012 the margin will vary between 1.50% and 2.00% based on our fixed charge coverage ratio. For additional information about the Global ABL Facility, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Description of Our Indebtedness—Global ABL Facility.”

The Goldman Sachs Funds

Certain affiliates of The Goldman Sachs Group, Inc., including GS Capital Partners V Fund, L.P., GS Capital Partners VI Fund, L.P. and related entities, or the Goldman Sachs Funds, are the majority owners of PVF Holdings, our largest shareholder.

Since 1986, the Goldman Sachs Merchant Banking Division (“GS MBD”), which manages The Goldman Sachs Funds, has raised 16 private equity and principal debt investment funds aggregating over $78 billion of

capital and invested in over 500 companies globally. GS Capital Partners VI is the current private equity vehicle through which Goldman Sachs conducts its large, privately negotiated, corporate equity investment activities. With six offices in five countries around the world, GS MBD is one of the largest managers of private capital globally.

Since 1998, GS MBD has invested over $8 billion in over 20 companies in the energy and industrial distribution sectors. Investments include, but are not limited to, Bill Barrett Corporation (natural gas exploration and production in the Rocky Mountain region of the U.S.), CCS Corporation (provider of integrated energy and environmental waste management services), Cobalt International Energy (deepwater Gulf of Mexico and West Africa oil exploration), CVR Energy (U.S. mid-continent based oil refinery), EF Energy Holdings, LLC (start-up upstream oil and gas company), Expro International (market leader in deepwater well testing and commissioning services), Horizon Wind Energy (one of the largest developers of wind power projects in North America), Kenan Advantage Group (largest provider of “last mile” fuel delivery services on a dedicated basis in the U.S.), Nalco Corporation (global provider of integrated water treatment and process improvement services), OIG Offshore Installation Group (provider of offshore mooring and subsea installation, module handling and logistics services), Associated Asphalt (largest asphalt terminalling operation in the U.S. and Ahlsell Sverige (industrial distributor in the Nordic region).

Risk Factors

Our business faces various risks. For example, decreased capital and operating expenditures in the energy industry could lead to decreased demand for our products and services and could therefore have a material adverse effect on our business, results of operations and financial condition. We face other risks including, among others, fluctuations in steel prices, particularly for our tubular product category, volatility of oil and natural gas prices, economic downturns, our lack of long-term contracts with many of our customers and suppliers and the absence of minimum purchase obligations under the long-term customer contracts that we do have. Additionally, we have significant indebtedness. As of December 31, 2011, we had total debt outstanding of $1,526.7 million, borrowing availability of $583.7 million under our credit facilities and total liquidity (borrowing capacity plus cash on hand) of $629.8 million, representing leverage of 4.1x as of December 31, 2011 under the terms of our then existing asset-based revolving credit facility (the “ABL Credit Facility”). Our significant indebtedness could limit our ability to obtain additional financing, our ability to use operating cash flow in other areas of our business, and our ability to compete with other companies that are less leveraged, and could have other negative consequences. See “Risk Factors” for a more detailed discussion of these risks and other risks associated with our business.

MRC Global Inc. was incorporated in Delaware on November 20, 2006. Our principal executive office is located at 2 Houston Center, 909 Fannin, Suite 3100, Houston, Texas 77010. Our telephone number is (877) 294-7574. Our website address is www.mrcpvf.com. Information contained on our website or on other external websites mentioned throughout this prospectus is expressly not incorporated by reference into this prospectus.

The Offering

The number of shares of common stock to be outstanding after the offering:

The data included in this prospectus regarding the industrial and oilfield PVF distribution industry, including trends in the market and our position and the position of our competitors within this industry, are based on our estimates which have been derived from management’s knowledge and experience in the areas in which our business operates, and information obtained from customers, suppliers, trade and business organizations, internal research, publicly available information, industry publications and surveys and other contacts in the areas in which our business operates. We have also cited information compiled by industry publications, governmental agencies and publicly available sources.

Depending on market conditions at the time of pricing of this offering and other considerations, we may sell fewer or more shares than the number set forth on the cover page of this prospectus. If we sell fewer shares of common stock without an increase in the anticipated price per share, or if we sell the same number of shares but at a lower price per share, the amount of proceeds we receive in this offering will be reduced, the amount of indebtedness we are able to repay will be reduced, and our leverage will be higher. As a result, the risks associated with our indebtedness and leverage will be greater than they would have been if we had repaid the amount of debt that we anticipated repaying. In addition, if we or the selling stockholder sells fewer shares of common stock, then the percentage of our shares controlled by affiliates of Goldman, Sachs & Co. will be higher. As a result, the risks associated with the control of our company by affiliates of Goldman Sachs will be greater than they would have been if these affiliates owned a smaller percentage of our company.

In this prospectus, unless otherwise indicated, foreign currency amounts are converted into U.S. dollar amounts at the exchange rate in effect on December 31, 2011, the last day of our fiscal year. Income statement figures are converted on a monthly basis, using each month’s average conversion rate.

SUMMARY CONSOLIDATED FINANCIAL INFORMATION

On January 31, 2007, MRC Global Inc. (formerly known as McJunkin Red Man Holding Corporation), an affiliate of The Goldman Sachs Group, Inc., acquired a majority of the equity of the entity now known as McJunkin Red Man Corporation (then known as McJunkin Corporation) (the “GS Acquisition”). In this prospectus, the term “Predecessor” refers to McJunkin Corporation and its subsidiaries prior to January 31, 2007 and the term “Successor” refers to the entity now known as MRC Global Inc. and its subsidiaries on and after January 31, 2007. As a result of the change in McJunkin Corporation’s basis of accounting in connection with the GS Acquisition, Predecessor’s financial statement data for the one month ended January 30, 2007 and earlier periods are not comparable to Successor’s financial data for the eleven months ended December 31, 2007 and subsequent periods.

McJunkin Corporation completed a business combination transaction with Red Man (the “Red Man Transaction”) on October 31, 2007. At that time, McJunkin Corporation was renamed McJunkin Red Man Corporation. Operating results for the eleven-month period ended December 31, 2007 include the results of MRC Global Inc. for the full period and the results of Red Man for the two months after the business combination on October 31, 2007. Accordingly, our historical results for the years ended December 31, 2011, 2010, 2009 and 2008 and the 11 months ended December 31, 2007 are not comparable to McJunkin Corporation’s historical results for the one month ended January 30, 2007.

The summary consolidated financial information presented below under the captions Statement of Operations Data and Other Financial Data for the years ended December 31, 2011, 2010, 2009 and 2008, and the summary consolidated financial information presented below under the caption Balance Sheet Data as of December 31, 2011 and December 31, 2010, have been derived from the consolidated financial statements of MRC Global Inc. included elsewhere in this prospectus that Ernst & Young LLP, our independent registered public accounting firm, has audited. The summary consolidated financial information presented below under the captions Statement of Operations Data and Other Financial Data for the one month ended January 30, 2007 and the eleven months ended December 31, 2007, and the summary consolidated financial information presented below under the caption Balance Sheet Data as of December 31, 2009, December 31, 2008 and December 31, 2007, have been derived from the consolidated financial statements of MRC Global Inc. not included in this prospectus that Ernst & Young LLP has audited.

All information in this prospectus gives effect to the two-for-one reverse split of our common stock which occurred on February 29, 2012.

The historical data presented below has been derived from financial statements that have been prepared using United States generally accepted accounting principles (“GAAP”). This data should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the consolidated financial statements and related notes included elsewhere in this prospectus.

In particular, we believe that Adjusted Gross Margin is a useful indicator of our operating performance because Adjusted Gross Margin measures our Company’s operating performance without regard to acquisition transaction-related amortization expenses.

However, Adjusted Gross Margin does not represent and should not be considered an alternative to gross margin or any other measure of financial performance calculated and presented in accordance with GAAP. Our Adjusted Gross Margin may not be comparable to similar measures that other companies report because other companies may not calculate Adjusted Gross Margin in the same manner as we do. Although we use Adjusted Gross Margin as a measure to assess the operating performance of our business, Adjusted Gross Margin has significant limitations as an analytical tool because it excludes certain material costs. For example, it does not include depreciation and amortization expense. Because we use capital assets, depreciation expense is a significant element of our costs and impacts our ability to generate revenue. In addition, the omission of amortization expense associated with our intangible assets further limits the usefulness of this measure. Furthermore, Adjusted Gross Margin does not account for our LIFO inventory costing methodology and, therefore, to the extent that recently purchased inventory accounts for a relatively large portion of our sales, Adjusted Gross Margin may overstate our operating performance. Because Adjusted Gross Margin does not account for certain expenses, its utility as a measure of our operating performance has material limitations. Because of these limitations, management does not view Adjusted Gross Margin in isolation or as a primary performance measure and also uses other measures, such as net income and sales, to measure operating performance.

The following table reconciles Adjusted Gross Margin to gross margin (in millions):

In particular, we believe that Adjusted EBITDA is a useful indicator of our operating performance because Adjusted EBITDA measures our Company’s operating performance without regard to certain non-recurring, non-cash or transaction-related expenses.

Adjusted EBITDA, however, does not represent and should not be considered as an alternative to net income, cash flow from operations or any other measure of financial performance calculated and presented in accordance with GAAP. Our Adjusted EBITDA may not be comparable to similar measures that other companies report because other companies may not calculate Adjusted EBITDA in the same manner as we do. Although we use Adjusted EBITDA as a measure to assess the operating performance of our business, Adjusted EBITDA has significant limitations as an analytical tool because it excludes certain material costs. For example, it does not include interest expense, which has been a significant element of our costs. Because we use capital assets, depreciation expense is a significant element of our costs and impacts our ability to generate revenue. In addition, the omission of the amortization expense associated with our intangible assets further limits the usefulness of this measure. Adjusted EBITDA also does not include the payment of certain taxes, which is also a significant element of our operations. Furthermore, Adjusted EBITDA does not account for our LIFO inventory costing

methodology, and therefore, to the extent that recently purchased inventory accounts for a relatively large portion of our sales, Adjusted EBITDA may overstate our operating performance. Because Adjusted EBITDA does not account for certain expenses, its utility as a measure of our operating performance has material limitations. Because of these limitations, management does not view Adjusted EBITDA in isolation or as a primary performance measure and also uses other measures, such as net income and sales, to measure operating performance.

The calculation of Adjusted EBITDA is consistent with the computation of Consolidated Cash Flow, as defined in the indenture governing the Notes, except for the change in the LIFO reserve, which would not be an adjustment in determining Consolidated Cash Flow.

The following table reconciles Adjusted EBITDA with our net income (loss), as derived from our financial statements (in millions):

We present Adjusted EBITDA RONA because we believe it is a useful indicator of our operating performance. Management believes that Adjusted EBITDA RONA provides meaningful supplemental information regarding our performance by excluding certain income and expense items and assets and liabilities that may not be indicative of the core business operating results and may help in comparing current period results with those of prior periods as well as with our peers. Our management uses Adjusted EBITDA RONA for determining a significant portion of the compensation of our executive officers. In addition, Adjusted EBITDA RONA is a useful indicator of our operating performance because it measures our performance without regard to acquisition transaction-related assets such as intangibles and goodwill.

However, Adjusted EBITDA RONA does not represent and should not be considered an alternative to other GAAP measures of performance such as net income. Also, our definition of Adjusted EBITDA RONA may not be comparable to similar measures that other companies report. Further, Adjusted EBITDA RONA has certain limitations, such as excluding our LIFO inventory costing methodology. In addition, the omission of our substantial intangible assets and goodwill further limits the usefulness of this measure. As a result, management does not view Adjusted EBITDA RONA in isolation or as a primary performance measure and uses other measures such as net income and sales to measure operating performance.

Management believes that the GAAP-based measure which is most comparable to Adjusted EBITDA RONA is a percentage with net income in the numerator and stockholders’ equity in the denominator. We believe Adjusted EBITDA is a useful measure of performance as compared to net income for the reasons stated above in note 2. We believe that for our Company total adjusted net assets (as calculated above) is a more useful measure than stockholders’ equity for purposes of a RONA calculation because, among other things, our calculation omits intangible assets and goodwill arising from acquisitions. Given the Company’s history of making numerous acquisitions in recent years, the Company believes that the measure it uses is more comparable to similar measures used by other companies if the effects of acquisitions are eliminated.

For a reconciliation of Adjusted EBITDA (the numerator in our calculation of Adjusted EBITDA RONA) to net income, see footnote 2 above. For a reconciliation of total adjusted net assets (the denominator in our calculation of Adjusted EBITDA RONA) to stockholders’ equity, see the following table:

The following table summarizes (1) the numerator and denominator in our calculation of Adjusted EBITDA RONA and (2) the numerator (net income) and denominator (stockholders’ equity) in the most comparable GAAP-based measure.