... 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3.length is 6m---12m. hot rolled channel steel Grade: Q235B ... 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3.length is 6m---12m. size (mm)thickness (mm)thickness (mm ... )weight (kg/m)50*253.00~5.006.002.37~3.4675*403.807.005.3075*404.007.005.6075*404 ... .60300*909.0013.0038.10 Hot Rolled JIS and G/B Channel Steel