This Document specifies the principles, test solutions, specimens, selection of test methods, test procedures, result calculation, reproducibility, and test reports for the method of testing the quality of galvanized coating per unit area on steel products. This Document applies to coating products including pure zinc coatings, zinc-iron alloy coatings, zinc-magnesium alloy coatings, zinc-aluminum-magnesium alloy coatings, aluminum-zinc alloy coatings, and aluminum-zinc-magnesium alloy coatings. Other coating products, such as aluminum-silicon alloy coatings, shall refer to this Document for further details.
Basic Data
Standard ID
GB/T 1839-2025 (GB/T1839-2025)
Description (Translated English)
Test method for gravimetric determination of the mass per unit area of galvanized coatings on steel products
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
H21
Classification of International Standard
77.040.99
Word Count Estimation
14,129
Date of Issue
2025-08-29
Date of Implementation
2026-03-01
Older Standard (superseded by this standard)
GB/T 1839-2008
Issuing agency(ies)
State Administration for Market Regulation; Standardization Administration of China
