This standard applies to hot-rolled steel plates with a width greater than or equal to 600 mm and a thickness of 0.35 to 200 mm and steel strips with a thickness of 1.2 to 25 mm. This standard also applies to narrow steel strips slitting from wide steel strips.
GB/T 709-1988 history
2019GB/T 709-2019 Dimension,shape,weight and tolerance for hot-rolled steel strip,plate and sheet
2006GB/T 709-2006 Dimension, shape, weight and tolerances for hot-rolled steel plates and sheets
1988GB/T 709-1988 Dimensions, shape, weight and tolerances for hot-rolled plates and sheets