Valve including ball valve, gate valve, globe valve and check valve for pipeline and process for oil, gas, petrochemical etc. with API 6D, CE & API 607 Certificated. The main material include carbon steel, stainless steel, duplex steel, alloy steel and bronze etc. End connection: Flanged, butt welding, socket welding, thread, hub end etc. Size ranges from 1/2" to 60", pressure rating: Class 150 -2500.