1. Supplier of AVK&USPipe 2.Certificate: SGS ISO9001:2000 3.Material: Ductile Iron/Gray Iron We are valve supplier in China, the stable quality and competitive price have gained us many customers all over the world such as, AVK, WATTAS, MUELLER,US PIPE,Kurdizel, etc. and we were awarded as the best supplier of AVK in 2006, so you can be assured of our competitive price, delivery and quality. ...