Fabricated Metal Product Manufacturing

NAICS 332 covers establishments that transform purchased metal — castings, forgings, sheet, plate, bar, and tube — into finished components and products through cutting, bending, welding, machining, and assembly. This subsector is the supply chain backbone for automotive, aerospace, construction, and industrial equipment manufacturing, operating roughly 55,000 establishments that collectively employ over 1.5 million workers. Production concentrates in the industrial Midwest — Ohio, Michigan, Indiana, Illinois, and Wisconsin — where proximity to automotive OEMs and steel producers creates dense networks of job shops, contract manufacturers, and specialized fabricators.

The sector spans from two-person welding shops to large operations like Precision Castparts Corp. (a Berkshire Hathaway subsidiary supplying aerospace forgings), Nucor's steel fabrication division, and Parker Hannifin's metal component operations. Structural steel fabricators like Schuff Steel and Banker Steel supply commercial construction. Ammunition and ordnance manufacturers like General Dynamics Ordnance and Vista Outdoor fall within this code. The sector's fragmentation — with the vast majority of establishments employing fewer than 50 workers — means competitive dynamics differ sharply from concentrated manufacturing industries.

Quality certifications define market access: ISO 9001 for general manufacturing, AS9100 for aerospace, ITAR compliance for defense, and AWS D1.1 structural welding code for construction. The Buy America provisions of the Infrastructure Investment and Jobs Act (2021) are channeling federal infrastructure spending toward domestically fabricated steel and iron, creating demand for structural fabricators, rebar processors, and bridge component manufacturers.