... /metal stampingMaterial: carbon steel, tinplate, alloy steel, stainless steel, copper. Brass, aluminum or as per customer’s drawing. Surface treatment: polished, Zinc plated ... /OEM2.ISO901,TS169493.Material: carbon/alloy steel,stainlee steel,aluminumStamping parts for rods, bars stamping, sheet metal cutting, punching and welding.Stamping ...