Hot rolled CHANNEL STEEL 1.material:Q235B/Q345B/Q195/Q215/SS400/SS540/A36 2.length:6~12m 3.grade: Q235B/345B Hot rolled CHANNEL STEEL1.material:Q235B,Q345B,Q195,Q215,SS400,SS540,A36 2.length:6-12m3.grade: Q235B,345B4.perforated:not perforated or as per your request.GB standard channel steelstandh(mm)b(mm)d(mm)teoretic weight550374.55.438kg/m6.363404.86.634kg/m8804358.045kg/m10100485.310.007kg/ ...