We can provide our customers with cast carbon steel and alloy steel that meet the following standards. And also we can provide all kinds of steel for special surposes and steel for special uses. 1. Carbon steel: Material: ISO 3755-1991 200-400 230-450 270-480 ASTM A48-1994 415-205/(60-30)/J03000 450-240/(65-35)/J03101 485-250/(70-40)/J02501 BS/3100-1987 A1 A2 A3 DIN 1681-1985 GS-38(1.0416) GS-45(1.0446) GS-52(1.0552) GS-60(1.0558)