Valves Astings: sand castings, sodium silicate precise castings and lose wax precise castings. Main material: All kinds of special steel for valves such as WCA, WCB, WCC, LCB, LCC, LC1, LC2, LC3, LF8, CF3, CF8M, CF3M, CK20, WC1, WC4, WC5 , WC6, WC9, C5 AND C11, etc. Valve:water control valve, butterfly valve, forged steel valve, gate valve, globe valve, ball valve, check valve, plug valve. Seal: mechanical seal, pipe/valve seal Pipe: high pressure pipe f, s.S.Threaded pipe f, s.S.Butt weld pipe We apply to all major international standard including api, jis, bs , din etc. Our products have passed iso9001, ped/ce , and api ce certificates for its quality assurance.