carbon steel flange 2.Material:Steel 3.OEM/ODM,TS16949 4.FIMA APQP QA QC,AQL... carbon steel flangeSize 1/2'' to 48'' Pressure 150LB ... : WN flange, SO flange, SW flange, PL flange, BL flange, LJ flange, TH flange, Usage: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc MATERIAL Stainless Steel Flanges ASTM ... and Middle East market and so on.Trade show: carbon steel flange