... channel bar , hexagon bar , square bar .)1.grade:201,202,301,302,303,304,304L,308,309,310 ... .surface:bright , black , pickeled & bright .4.length: no more than 6 m .5.packing: according ... standard AISI , JIS , ER , GB , ASTM , etc. grade 201,201,301,302,303,304,304l,308,309,310 ... , good surface . chemcial composition according to international standards of ASTM , AISI , JIS , ER , GB ,etc. contactWelcome ...