We learned your name on line.May I take the liberty to introduce our company to you.ZZG Valve is one of the leading manufacturer of valves in China. We specialize in export of all kinds of valve.(Ball Valve,Gate Valve,Butterfly Valve etc.) Materials: ASTM A216 WCB ,ASTM A182 304,304L,316,316L ,A105etc. Pressure Class: 150-2500LB. ISO & API approved Any inquiry will be received our prompt attention,no matter they are large or small.The further details for contact.