... unidusgroup.com, can be called super austenitic stainless steel. Super austenitic stainless steel is mainly to solve the problem of ... standard (part):ASTM A312 Seamless and welded austenitic stainless steel pipe Main standard (part):ASTM A269 General equipment ... stainless steel pipeASTM B673,ASTM B674,ASTM B677,ASTM B675,ASTM B676, ASTM B690Performance features:1 in the harsh corrosive environment ...