... sheet,galvanized steel sheet or tube),stainless steel,copper ,brass,aluminum,etc4.Finish:zinc plated,chromated ... punching, threading,welding, tapping, rivetingMaterialStainless steel, carbon steel,copper, brass, and bronze (according to customer's requirements ... .UsageAll kinds of cars, machinery, home appliance, electronic products, electric appliance, stationery, computers, power switches, miniature ...