... "China assured " Material:iron Hebei Zhixin Machinery Manufacture Group Co., Ltd. based on coke oven care equipment, metallurgical equipment, ... all types of products for the blast furnace, coke oven plant and equipment, non-standard machine tool products, ... are graphite cast iron, ductile iron, heat-resistant corrosion-resistant cast iron, carbon steel, alloy steel, gray cast iron, chromium and ...