carbon steel slip-on flange 1.We have our own factory 2. ... special design ProductFlange ,Steel flange,Carbon steel,carbon steel slip-on flangeSize15mm~600mmMaterialCarbon steel(20#,35#,45# etc),Stainless steel,Alloy steel,etcTypeslip-on flange Pressure150lb~3000lbStandardANSI,BS,DIN ... 1. sealing surface of flat welding flange FF, RF2. Flange productive material:Stainess Steel: 201,202,301,304,304L,316 ...