... -7,FGS600-3,FGS700-2; 2. Grey iron: ASTM A48 No.20,25,30,35,40,45,50; ASTM A126 Class ... wax casting(Investment castings), lost foam casting and shell-core casting. We have special engineers and technicians who have much experiences in arranging ... production and quality controlling to track all orders and delivery time, and carry out products inspection. Our products ...