This standard specifies the size, shape, total content and allowable deviation of forged steel bars (including round steel, square steel and flat steel). This standard applies to round steel and square steel with a diameter or side length of 50mm to 400mm, and flat steel with a thickness of 20mm to 160mm and a width of 40mm to 300mm.
GB/T 908-2008 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
GB/T 908-2008 Forged bars.Dimensions,shape,weight and tolerances has been changed from GB/T 16761-1997 Dimensions,shape,weight and tolerances for forged flats.