1.Size:1/2"-78" 2.Material:Stainless Steel 3.Standard: ANSI, BS, DIN, UNI, JIS, ... requirementProduct nameStainless steel FlangeProducts categorySOP SOH BL WN MSS API AWWA LONGWNStandardANSI,DIN,EN1092-1,NFE,AS,JIS and customers ... 316, 304L, 304,Class150#,300#,400#,600#,900#Production processraw material--cutting--heating--forging--heat treatment--maching--inspection. ApplicationPetroleum, chemical, ...