... Grade: AISI304, 316, AISI316L Standard: DIN,SMS, Stainless Steel Flanges Material:Stainless steel(304,304L,316,316L,317L,321,321H,310S ... , GB/T12459,GB/T13401,SH3408, SH3409,HG/T21635 ,HG/T216313)Material:Stainless steel(304,304L,316,316L,317L,321,321H,310S ... specifications can be designed and satisfied for customers special requirements. Forged Stainless steel flange