Exhibit 3.1

RESTATED CERTIFICATE OF INCORPORATION

OF

RELIANCE STEEL & ALUMINUM CO.

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The present name of the corporation is Reliance Steel & Aluminum Co.  The corporation was incorporated under the name “Reliance Steel & Aluminum Co.” by the filing of its original Certificate of Incorporation with the Secretary of State of the State of Delaware on April 7, 2015.  This Restated Certificate of Incorporation of the corporation, which restates and integrates and also further amends the provisions of the corporation’s Certificate of Incorporation, was duly adopted in accordance with the provisions of Sections 242 and 245 of the General Corporation Law of the State of Delaware and by the written consent of its sole stockholder in accordance with Section 228 of the General Corporation Law of the State of Delaware.  The Certificate of Incorporation of the corporation is hereby amended, integrated and restated to read in its entirety as follows:

FIRST.  The name of the corporation is Reliance Steel & Aluminum Co.

SECOND.  The address of the corporation’s registered office in the State of Delaware is 1209 Orange Street, Wilmington, New Castle County, Delaware 19801.  The name of its registered agent at such address is The Corporation Trust Company.

THIRD.  The purpose of the corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware.

FOURTH.  A.  The total number of shares of all classes of stock which the corporation shall be authorized to issue is 205,000,000 shares, divided into 200,000,000 shares of Common Stock, par value $.001 per share (herein called “Common Stock”), and 5,000,000 shares of Preferred Stock, par value $.001 per share (herein called “Preferred Stock”).

B.                                    The Board of Directors of the corporation (the “Board of Directors”) is hereby expressly authorized, by resolution or resolutions thereof, to provide, out of the unissued shares of Preferred Stock, for series of Preferred Stock and, with respect to each such series, to fix the number of shares constituting such series and the designation of such series, the voting powers (if any) of the shares of such series, and the preferences and relative, participating, optional or other special rights, if any, and any qualifications, limitations or restrictions thereof, of the shares of such series.  The powers, preferences and relative, participating, optional and other special rights of each series of Preferred Stock, and the qualifications, limitations or restrictions thereof, if any, may differ from those of any and all other series at any time outstanding.

C.                                    Except as may otherwise be provided in this Restated Certificate of Incorporation (including any certificate filed with the Secretary of State of the State of Delaware establishing the terms of a series of Preferred Stock in accordance with Section B of this Article FOURTH)

or by applicable law, each holder of Common Stock, as such, shall be entitled to one vote for each share of Common Stock held of record by such holder on all matters on which stockholders generally are entitled to vote, and no holder of any series of Preferred Stock, as such, shall be entitled to any voting powers in respect thereof.

D.                                    Subject to applicable law and the rights, if any, of the holders of any outstanding series of Preferred Stock, dividends may be declared and paid on the Common Stock at such times and in such amounts as the Board of Directors in its discretion shall determine.

E.                                     Upon the dissolution, liquidation or winding up of the corporation, subject to the rights, if any, of the holders of any outstanding series of Preferred Stock, the holders of the Common Stock shall be entitled to receive the assets of the corporation available for distribution to its stockholders ratably in proportion to the number of shares held by them.

FIFTH.  Unless and except to the extent that the bylaws, as may be amended from time to time (the “Bylaws”), of the corporation shall so require, the election of directors of the corporation need not be by written ballot.

SIXTH.  In furtherance and not in limitation of the powers conferred by the laws of the State of Delaware, the Board of Directors is expressly authorized to make, alter and repeal the Bylaws.  Advance notice of stockholder nominations for election of directors and other business to be brought by stockholders before a meeting of stockholders shall be given in the manner provided by the Bylaws.

SEVENTH.  A director of the corporation shall not be liable to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent such exemption from liability or limitation thereof is not permitted under the General Corporation Law of the State of Delaware as the same exists or may hereafter be amended.  Any amendment, modification or repeal of the foregoing sentence shall not adversely affect any right or protection of a director of the corporation hereunder in respect of any act or omission occurring prior to the time of such amendment, modification or repeal.

EIGHTH.  The corporation reserves the right at any time, and from time to time, to amend, alter, change or repeal any provision contained in this Restated Certificate of Incorporation, and other provisions authorized by the laws of the State of Delaware at the time in force may be added or inserted, in the manner now or hereafter prescribed by law; and all rights, preferences and privileges of any nature conferred upon stockholders, directors or any other persons by and pursuant to this Restated Certificate of Incorporation in its present form or as hereafter amended are granted subject to the rights reserved in this article.

NINTH.  The corporation shall not be subject to the provisions of Section 203 of the General Corporation Law of the State of Delaware.

TENTH.  Unless the corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall, to the fullest extent permitted by law, be the sole and exclusive forum for (1) any derivative action or proceeding brought on behalf of the corporation, (2) any action asserting a claim of breach of a fiduciary duty owed by any director, officer, other employee or stockholder of the corporation to the

corporation or the corporation’s stockholders, (3) any action asserting a claim arising pursuant to any provision of the General Corporation Law of the State of Delaware or as to which the General Corporation Law of the State of Delaware confers jurisdiction upon the Court of Chancery of the State of Delaware, (4) any action asserting a claim arising pursuant to any provision of this Restated Certificate of Incorporation or the Bylaws, or (5) any action asserting a claim governed by the internal affairs doctrine. Any person or entity purchasing or otherwise acquiring or holding any interest in shares of capital stock of the corporation shall be deemed to have notice of and consented to the provisions of this Article Tenth.

IN WITNESS WHEREOF, Reliance Steel & Aluminum Co. has caused this Restated Certificate of Incorporation to be executed by its duly authorized officer on this 26th day of May, 2015.