United States securities and exchange commission logo March 25, 2024 Kelly Youngblood Vice President and Chief Financial Officer MRC GLOBAL INC. 1301 McKinney Street Suite 2300 Houston, TX 77010 Re: MRC GLOBAL INC. PRE 14A filed March 15, 2024 File No. 001-35479 Dear Kelly Youngblood: We have reviewed your filing and have the following comments. In some of our comments, we may ask you to provide us with information so we may better understand your disclosure. Please respond to these comments by providing the requested information or advise us as soon as possible when you will respond. If you do not believe our comments apply to your facts and circumstances, please tell us why in your response. After reviewing your response to these comments, we may have additional comments. All defined terms have the same meaning as in the proxy statement listed above. PRE 14A filed March 15, 2024 Governance Highlights, page 9 1. We note your disclosure that "[a]ll directors are elected annually based on a plurality of the votes cast in uncontested elections." However, this appears to conflict with disclosure elsewhere in the preliminary proxy statement (e.g., on page 32) regarding the director designated by the holder of the Company's preferred stock. Please revise or advise. Deadlines for Submitting Stockholder Proposals for 2025 Annual Meeting of Stockholders, page 14 2. Please confirm that your disclosure complies with the requirement to advise shareholders of the deadline for timely submission of dissident nominees for next year's annual meeting. See Rule 14a-5(e)(4) and CDI 139.03 under "Proxy Rules and Schedule 14A, available on our Web site at https://www.sec.gov/corpfin/proxy-rules-schedules-14a-14c- Kelly Youngblood FirstName LastNameKelly Youngblood MRC GLOBAL INC. Comapany March NameMRC GLOBAL INC. 25, 2024 March2 25, 2024 Page 2 Page FirstName LastName cdi. If I hold shares in street name, does my broker need instructions to vote my shares?, page 17 3. We note the following disclosure on page 17: "Under rules of the New York Stock Exchange (the NYSE ), if you hold shares of stock in street name and do not submit specific voting instructions to your brokers, banks or other nominees, they generally will have discretion to vote your shares on routine matters such as Proposal III but will not have the discretion to vote your shares on non-routine matters, such as Proposals I, II and IV." However, it is our understanding that brokers, banks and other fiduciaries do not discretion to vote on ANY matter if they are solicited by the dissident. Please revise or advise. Who is paying for this proxy solicitation?, page 21 4. Please revise to fill in the blanks regarding approximate expected solicitation costs and such costs incurred to date. Certain Information Regarding Nominees, page 35 5. Please revise to include principal occupations and employment during the past five years for each nominee. See Item 7(b) of Schedule 14A and Item 401(e)(1) of Regulation S-K. For example, there appears to be no employment information for Ms. Adams more recently than 2016 or for Mr. Damiris more recently than 2019. General 6. Because this is a contested solicitation, the correct EDGAR tag is "PREC14A" rather than "PRE 14A." Please correct in future filings. 7. Please provide the information required by Rule 14a-16(d), including the Web site (other than the Commission's Web site) where the Company's soliciting materials may be found. While we note the reference to a site at www.viewourmaterials/mrc, it is not clear from your disclosure that all of your proxy materials are available there. 8. We note your disclosure in the proxy statement and the letter to shareholders that Engine Capital "intends to nominate" directors for election at the Annual Meeting. Please update your proxy disclosure to reflect that such nominations have occurred. 9. Please revise to include the information required under Item 405 of Regulation S-K. See Item 7(b) of Schedule 14A. 10. Please provide the information required under Item 408(b) of Regulation S-K. See Item 7(b) of Schedule 14A. We remind you that the filing persons are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Kelly Youngblood MRC GLOBAL INC. March 25, 2024 Page 3 Please direct any questions to Laura McKenzie at 202-551-4568 or Christina Chalk at (202) 551-3263. FirstName LastNameKelly Youngblood Sincerely, Comapany NameMRC GLOBAL INC. Division of Corporation Finance March 25, 2024 Page 3 Office of Mergers & Acquisitions FirstName LastName