... 0.6MPa-25.0MPa 5K-160K STANDARD: ASTM, JIS,DIN. Stainless Steel Flanges Material:Stainless steel(304,304L,316,316L,317L,321 ... .2)Standard:ASME B16.9, MSS SP-43 , DIN 2615,JIS B2313 , GB/T12459,GB/T13401,SH3408, SH3409,HG/T21635 ,HG ... designed and satisfied for customers special requirements. welding stainless steel flanges