... -25.0MPa 5K-160K STANDARD: ASTM, JIS,DIN. Stainless Steel Flanges Material:Stainless steel(304,304L,316,316L,317L,321,321H ... ,Slip-on Flange,Welding Neck Flange,Long Welding Neck Flange,Blind Flange,Stocket Welding,Thread Flange,Screwed Flange,Lap Joint Flange ... designed and satisfied for customers special requirements. welding stainless steel flanges