This standard specifies the cross-sectional shape, cross-sectional dimensions, weight and allowable deviations, length and allowable deviations, appearance, etc. of forged steel bars (round steel, square steel, flat steel). This standard applies to forged round steel with a diameter of 40mm~1000mm, forged square steel with a side length of 40mm-1000mm, and flat steel with a thickness of 20mm-800mm and a width of 40mm-1500mm.
GB/T 908-2019 history
2019GB/T 908-2019 Forged bars for dimensions,shape,weight and tolerances
2008GB/T 908-2008 Forged bars.Dimensions,shape,weight and tolerances
1987GB/T 908-1987 Forged round and square steels dimension, shape, weight and tolerance