Our factory Liaoning Lianggong Valve Factory specialized in designing and manufacturing industrial steel valve which conform to the standard of American API, ANSI, MSS, British BS, French NF, Japanese JIS, JPI, German DIN and Chinese GB etc. Our products mainly classified as gate valve, stop valve, check valve, ball valve, butterfly valve, instrument valve as well as plumbings, etc. The grade of pressure are from 150 LB to 2500 LB, our factory has been certified by ISO 9001(2000) Quality System.