... covered in the types of globe valves, gate valves, butterfly valve, check valves, diaphragm valves, ball valves, and instrument valves can be supplied accordance with ... biger size (for special requirement). The material of the valves can be casting steel of WCB, WC1, C5, WC6 ... , K500 etc.. The valves can be used for power plant, nuclear power plant, oil fields, chemical industrial plant, steel mill, ...