This standard specifies the size, shape, technical requirements, test methods, inspection rules, etc. of hot-rolled thin steel plates and strips of carbon structural steel and low alloy structural steel. This standard applies to hot-rolled steel sheets and strips of carbon structural steel and low-alloy structural steel with a thickness not greater than 4mm.
GB/T 912-1989 history
2017GB/T 3274-2017 Hot-rolled plates、sheets and strips of carbon structural steels and high strength low alloy structural steels
2008GB 912-2008 Hot-rolled sheets and strips of carbon structural steels and high strength low alloy structural steels
1989GB/T 912-1989 Hot-rolled plain carbon and low alloy structural steel sheets and strips
GB/T 912-1989 Hot-rolled plain carbon and low alloy structural steel sheets and strips was changed to GB 912-2008 Hot-rolled sheets and strips of carbon structural steels and high strength low alloy structural steels.