... , ABNTAvailable Size: Engineering steel: size 50×50mm-650×650mm.Tool, die & mold Steel: size 50×50mm-650×650mm ( ... flat steel, square steel, die steel, spring steel, carbon tool steel, stainless steel, alloy steel, high speed steel, carbon ... petrochemical, automobile,communication, transportation, medical-health , national defence, army, aerospace and electronic information.ADD:South of West Ma Gezhuang ...