Ball Valve, Gate Valve, Globe Valve manufacturer / supplier in China, offering BS1868 ASTM A216 Wcb Flanged RF Check Valve Non Return Valve, GOST Standard DN50 DN80 DN100 Pn16 Pn25 Pn40 Wcb Swing Check Valve, Fire Safe API6d Wcb CF8 CF8m A105 F316 Ball Valve RF Bw and so on.