hot rolled steel channels 1) Standard:ASTM,GB/T,JIS 2) Material:Q195,Q215,Q235,SS400,SS540,A36 3) Packing:in bundle hot rolled steel channelsDescription: One kind of profile bars with "I" shape section, the specification is usually expressed by middle height (h)* flange width (b)* middle thickness (d).application: Can be widely used in various construction structure, bridge,blackets,mechanism and ...