standard:ASTM AISI JIS EN GB material:200/300/400 series The stainless steel pipeStandardASTM,DIN 17458-85,DIN17456-85,JIS G 3463,JIS ... -91,GB9948-88,Material201,202,301,304,304L,310,310S,316,316L,317,317L,321,406,409,410,410S,904L,0Cr13 ... or question,you can contact us !!!Earlier buying,earlier booming!!! ASTM/ASME A312 A213 stainless steel pipe