Nonferrous Metals Rolling, Drawing, Extruding & Alloying (Except Copper & Aluminum)

Copper and aluminum each have sufficiently large, distinct manufacturing sectors to warrant their own NAICS codes (3314x series). NAICS 33149 captures the remaining nonferrous metals — such as zinc, lead, tin, nickel, and titanium — whose rolling, drawing, extruding, and alloying operations are grouped together due to their comparatively smaller but commercially significant production volumes.

The key distinction is the primary manufacturing process: if the dominant value-adding step is mechanical deformation — rolling sheet, drawing wire, or extruding profiles — the product aligns with the rolling/drawing/extruding segment (331491). If the primary operation is metallurgical, such as re-melting scrap, refining impurities, or blending alloy compositions, it falls under secondary smelting, refining, and alloying (331492). Many facilities perform both, so the predominant activity by value of shipments governs NAICS assignment.