This standard is applicable to the cold-formed steel strips of ordinary carbon steel and low-alloy steel strips produced on continuous roll-type cold-bending units for the manufacture of freight vehicles, trailers and other vehicles.
GB/T 6726-1986 history
2008GB/T 6726-2008 Cold forming sectional steel for vehicles.Dimensions,shape,weight and tolerances
1986GB/T 6726-1986 Cold forming sectional steel for cargo vehicle--Dimension, form, weight and permissible deviations