... establishing business relation. 1.Material;carbon steel ,alloy steel ,stainless steel . 2.Size:DN15-DN1000. 3.Standard: ANSI B16.5,ANSI B16.47 ,GB,DIN ... /SO/PL/BL/TH/SW/LFMaterial:carbon steel:A105,Q235,ST37,P250GH,C22.8,S235JRstainless steel:321,201,F304,F304L,F316,F316L ... 900, CLASS 1500, CLASS 2500European Series:PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN ...