Pipeline Valves are mainly applied in pipelines of the petroleum industry and chemical industry as the valve to control medium. According to connecting model, there are flange valve, welding neck flange, downhand flange and thread flange. The types of valve have gate valve, globe valve, cock valve, ball valve. We design them respectively conform to API Spec 6D, ANSI B16.5, ANSI B31.4, ANSI 31.8 and GB, JB, HB, SY etc. The main sealing parts are welded by Nickel Base, Cobalt Base and Iron Base, so the corrosion, abrasion and erosion resistance are available.