stainless steel butterfly valves,ball valves,forged valves,steel flange,unions,ferrules We can manufacture these products ... casting and forging products for mechanical fields,including butterfly valves,ball valves,dirvet valve,sseptic gate valve,pneumatic double seat ball ... valve,diaphgram valve,sampling valve etc. We have main forged equipment,consisting of 5 production line,300T,400T,1000T pressing ...