6 Common metals and their alloys; ironmongery, namely, small items of metal hardware, namely, pipe end fittings, couplings, pulleys, springs, nuts, bolts, washers, clamps, valves, and sheet metal parts primarily for the aeronautical, defense, automotive, motor sports, composites, medical, and marine industries; pipes and tubes of metal; metal fasteners, namely, brackets for securing ducting, pipes and pipe assemblies, nuts, bolts and clamping devices; metal hardware, namely, nuts locks, lock nuts, metal pipe couplings, metal pipe fittings, clamps and couplings; metal pipe assemblies, namely, shaped or formed metal pipes, metal pipes with end fittings or couplings for connecting to other pipes or structures; formed and shaped metal pipes, with end fitting or couplings for connecting to other pipes or structures for fluid systems in the aeronautical, defense, automotive, composites, medical, and marine industries; rigid pipe assemblies of metal for aircraft and automotive fluid systems to transfer oil, fuel or air throughout the airframe or vehicle and/or to onboard systems, such as engines, water systems and hydraulic systems