Dervos Industrial Valves Manufacturing Co., Ltd Manufacturing is one approved by the relevant state registration of the valve business. The main variety of Ball Valves,Butterfly Valves,Check Valves,Gate Valves,Globe Valves,Plug Valves,Angle Valves,Knife Valves,Marine Valves,Needle Valves,Strainer,Other Valves,Steel Pipe,Alloy Steel Pipe,Carbon Steel Pipe,Ductile Iron Pipe,OCTG Steel Pipe,Stainless Steel Pipe,Pipe Fittings,Pipe Bend,Pipe Cap,Coupling,Pipe Elbow,Pipe Olet,Pipe,Reducer,Stub End,Pipe Tee,Other Fitting,Flanges,Blind Flange,Lap Joint Flange,Orifice Flange,Slip On Flange,Socket Welded Flange,Spacer Ring Flange,Threaded Flange,Weld Neck Flange,Other Flange and other valve equipment. Factory direct, reliable quality. Warmly welcome friends to visit, study, business negotiations and mutual benefit.