2008GB/T 13911-2008 Designation for metallic coating and chemical treatment
1992GB/T 13911-1992 Expression methods for metallic coating and chemical treatment
1976GB/T 1238-1976 Metal coating and chemical treatment representation method
GB/T 1238-1976 Metal coating and chemical treatment representation method was changed to GB/T 13911-1992 Expression methods for metallic coating and chemical treatment.