NAICS 331313in33131:Alumina and Aluminum Production and Processing

Alumina Refining and Primary Aluminum Production

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Alumina Refining and Primary Aluminum Production5

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About NAICS331313

The North American Industry Classification System (NAICS) code 331313 covers alumina refining and primary aluminum production. Federal agencies use NAICS codes to classify contracts by industry. Businesses should register their applicable NAICS codes in SAM.gov.

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65-PAD,ABSORBENT,LITTE

DEPT OF DEFENSE

PHILADELPHIA, PA

Posted Jul 27, 2026

Due Aug 3, 2026

65-RESTRAINT KIT,HEAD

DEPT OF DEFENSE

PHILADELPHIA, PA

Posted Feb 6, 2026

65-CONVERSION KIT,MRAP

DEPT OF DEFENSE

PHILADELPHIA, PA

Posted Oct 14, 2025

PLATE, ABRASIVE DECK, .375" THK COMP-C TYPE-5, RR-T-650E (4FT X 8FT SHEETS), ALUMINUM

DEPT OF DEFENSE

Posted Jun 30, 2025

95-ALUMINUM ANGLES

INTERIOR, DEPARTMENT OF THE

Posted Jun 20, 2025

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