FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Ketchum Lewis Craig 2. Date of Event Requiring Statement (Month/Day/Year) 04/11/2012 3. Issuer Name and Ticker or Trading Symbol MRC GLOBAL INC. [MRC] (Last) (First) (Middle) 2 HOUSTON CENTER, 909 FANNIN, SUITE 3100 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) HOUSTON, TX 77010 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 0 I See Footnotes (1) (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Ketchum Lewis Craig 2 HOUSTON CENTER, 909 FANNIN SUITE 3100 HOUSTON, TX 77010	  X	Â	Â	Â

Signatures

/s/ Brian K. Shore, Attorney-in-fact		04/11/2012
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	PVF Holdings LLC ("PVF") owns 84,214,026 shares of common stock, par value $0.01 per share ("Common Stock"), of MRC Global Inc. (the "Company"). Mr. Ketchum owns 11,219.8688 common units ("Common Units") of PVF (some of which he owns directly and others of which he owns through a limited liability company), representing 3.36% of the total outstanding Common Units. Mr. Ketchum may be deemed to beneficially own 2,831,147 shares of Common Stock indirectly through his ownership of such Common Units. Mr. Ketchum also owns 381.3098 profits units ("Profits Units") of PVF, representing 8.50% of the total outstanding Profits Units. (continue in footnote 2)
(2)	(continued from footnote 2) The Amended and Restated Limited Liability Company Agreement of PVF, dated as of October 31, 2007 (the "LLC Agreement"), Amendment No. 1 to the LLC Agreement, dated as of December 18, 2007, and Amendment No. 2 to the LLC Agreement, dated as of October 31, 2009, are filed as exhibits 10.17, 10.17.1, and 10.17.2 to the Company's Registration Statement on Form S-1, File No. 333-178980.
(3)	Mr. Ketchum does not have the power to vote or dispose of the shares of Common Stock that correspond to his ownership of Common Units and thus does not have beneficial ownership of such shares. In addition, Mr. Ketchum does not have any pecuniary interest in the shares of Common Stock held by PVF because he does not control PVF and does not have or share investment control over the shares of Common Stock owned by PVF.

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