This standard specifies the principle, sample, test device, test solution, test conditions and procedures, test result calculation, etc. Both the gravimetric method and the gas method in this standard are applicable to the determination of the zinc layer weight of galvanized steel wire, but the gravimetric method is used in the referee test. The gravimetric method in this standard is applicable to both hot-dip galvanized steel wire and electro-galvanized steel wire. The gas method is suitable for electro-galvanized steel wire, and the hot-dip galvanized steel wire can also refer to the gas method.
GB/T 2973-1991 history
2008GB/T 1839-2008 Test method for gravimetric determination of the mass per unit area of galvanized coatings on steel products
2004GB/T 2973-2004 Zinc coated steel wire Test method for gravimetric determination of zinc coating
1991GB/T 2973-1991 Zinc-coated steel wire--Test method for weight of zinc coating