... rolled steel channels 1) Standard:ASTM,GB/T,JIS 2) Material:Q195,Q215,Q235,SS400,SS540,A36 3) Packing:in bundle hot rolled steel ... , specifcation, quantity, length, handling time,measure way.Steel Grade: Q235,SS400Standard: GB/T 700-1988Size: Middle ... 630mm, flange width:68-180mm,middle thickness:4.5-17mm or others. Length:6/9/12mPacking: ... directly without any hestation hot rolled steel channels