... :Stainless steel(304,304L,316,316L,317L,321,321H,310S,347H,S1803,904L) Stainless Steel FlangesFeatures:1)Type:Plate Flange,Flat Flange,Slip-on Flange ... ,Welding Neck Flange,Long Welding Neck Flange,Blind Flange,Stocket Welding,Thread Flange,Screwed Flange,Lap Joint Flange ...