WELDING METALLURGY, INC.

Sheet Metal Work Manufacturing

This includes establishments primarily engaged in manufacturing sheet metal work (except stampings).

Fabricated Pipe and Pipe Fitting Manufacturing

This includes establishments primarily engaged in fabricating, such as cutting, threading, and bending, metal pipes and pipe fittings made from purchased metal pipe.

Other Aircraft Parts and Auxiliary Equipment Manufacturing

This includes establishments primarily engaged in (1) manufacturing aircraft parts or auxiliary equipment (except engines and aircraft fluid power subassemblies) and/or (2) developing and making prototypes of aircraft parts and auxiliary equipment. Auxiliary equipment includes such items as crop dusting apparatus, armament racks, inflight refueling equipment, and external fuel tanks.