2017GB/T 702-2017 Hot-rolled steel bars—Dimensions,shape,weight and tolerances
2009GB/T 702-2008 Dimensions, shapes, weights and allowable deviations of hot-rolled steel bars
2004GB/T 702-2004 Hot-rolled round and square steel bars-Dimension,Shape,weight and tolerance
1988GB/T 704-1988 Dimensions, shape, weight and tolerances for hot-rolled flats
1986GB/T 702-1986 Hot-rolled round and square steels--Dimension,shape,weight and tolerance
1983GB 704-1983 Dimensions, shapes, weights and allowable deviations of hot-rolled flat steel
0000 GB 702-1972
1966GB/T 911-1966 Hot-rolled and forged tool steel flats
GB/T 702-2008 Dimensions, shapes, weights and allowable deviations of hot-rolled steel bars has been changed from GB/T 704-1988 Dimensions, shape, weight and tolerances for hot-rolled flats.
GB/T 702-2008 Dimensions, shapes, weights and allowable deviations of hot-rolled steel bars has been changed from GB/T 705-1989 Hot-rolled hexagonal and octagonal steel bars--Dimensions, shape, weight and tolerance.
GB/T 702-2008 Dimensions, shapes, weights and allowable deviations of hot-rolled steel bars has been changed from GB/T 911-2004 Dimensions,shapes,weight and tolerances for hot-rolled tool flat steels.