standard:ASTM AISI JIS EN GB material:200/300/400 series ASTM/ASME A269/SA269 stainless steel pipe(1)specification:a.standard: ASTM ... G 3463,JIS G 3448,GB13296-91,GB9948-88 b.material: 201,202,301,304,304L,310,310S,316,316L,317 ... steel piped.surface treatment:polishing or notpictures for you ASTM/ASME A269/SA269 stainless steel pipes/tubes