... 3.Material:WCB,WC6,CF8,CF8M API6D Cast Steel Flat Gate Valve With Low Prices 1.Size:DN25-1000mm2.Pressure: PN1 ... control the production quality effectively Specification:1.Pipeline valve: API6D,API6002.Steel flat gate valve for pipeline: JB/t52983.Pipe flange and ... welding.9.Design feature: Rising-stem parallel single-disc,Rising-stem parallel double-disc.10.Sealing formation:Hard alloy,Alloy steel ...