Channel Steel grade: Q195,Q235; Q345 Standard: GB/T 707-1988 Length: 6,9,12M Steel grade: Q195-235; Q235B.Standard: GB/T 707-1988Length: 6, 9, 12meters or as per your required. Standard conversion of carbon structural steelGBASTMJISDINBSQ235GrD Gr65SS400 SM400A SM400BS235JR S235JRG1 S235JRG2 S235JO S235J2G3 S235J2G408A15 S235JR S235JRG1 S235JRG2 S235JO S235J2G3 S235J2G4 Size(mm)Weight (kg/m)50×37 ...