6 cast steel; steel castings and stainless steel castings; patterns for production of steel castings and stainless steel castings; parts produced by steel casting, namely, valves, and regulators; components for the oil and gas industry produced by steel casting; parts for heavy equipment used in the mining and construction industries produced by steel casting, namely, bushings, wear plates, axles, shafts, sprockets, rollers, and sheaves; components for the transportation industry produced by steel casting, namely, coupling components, fastening components, load security components, racks, housings, other interior components, chassis, axles, axle boxes, and traction components