This standard specifies the method for determining the requirements for phosphate conversion coatings, and is mainly applicable to ferrous metals, aluminum, zinc, cadmium and their alloys.
GB/T 11376-1997 history
2020GB/T 11376-2020 Metallic and other inorganic coatings—Phosphate conversion coating of metals
1997GB/T 11376-1997 Phosphate conversion coatings for metals