... ball valves, and instrument valves can be supplied accordance with the standard & code of GB, ASME, API, ANSI, AWWA, ... DIN, BS, NF, JIS, IBR etc.. The pressure of the valves can be supplied from PN1.0MPa to PN42MPa ... , or PN150lb to PN4500lb. The size of the valves can be supplied from DN 1/ ... and more biger size (for special requirement). The material of the valves can be casting steel of WCB, ...