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See Chinese contents: GB/T 39130-2020 GB/T 39130-2020: Measuring method for adhesion of zinc coating for galvanized products
This Standard specifies the terms and definitions, samples, bending tests, and test reports of measuring methods for coating adhesion of zinc coatings for galvanized products, zinc-iron alloys, zinc-aluminum alloys, and aluminum-zinc alloy products. This Standard applies to the coating adhesion test of galvanized, zinc-iron alloy, zinc-aluminum alloy and aluminum-zinc alloy coated steel sheets (steel strips) with a thickness of 0.1 mm ~ 3.0 mm.
