Ownership Submission
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 *
  Perkins John Anthony
 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 21,853
D
 
Common Stock 5,771 (1)
D
 

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
Stock Option (right to buy)   (2) 12/03/2019 Common Stock 4,370 $ 22.84 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Perkins John Anthony
2 HOUSTON CENTER, 909 FANNIN
SUITE 3100
HOUSTON, TX 77010		   X      

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) On February 29, 2012, the reporting person was awarded 5,771 shares of restricted common stock, par value $0.01 per share ("Common Stock"), all of which vest on the fifth anniversary of the date of grant, conditioned on the reporting person's continued service with the issuer and subject to accelerated vesting under certain circumstances.
(2) 25% of the options reported above became exercisable on 12/3/2011; and 25% of the options reported above will become exercisable on each of 12/3/2012, 12/3/2013, and 12/3/2014.

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