GB/T 21530-2008 Galvanized steel wire for cotton packing

GB/T 228-2002 Metallic materials—Tensile testing at ambient temperature GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.2-2015 Metallic materials—Tensile testing—Part 2:Method of test at elevated temperature GB/T 228.3-2019 Metallic materials—Tensile testing—Part 3:Method of test at low temperature GB/T 228.4-2019 Metallic materials—Tensile testing—Part 4:Method of test in liquid helium GB/T 238-2002 Metallic materials—Wire—Reverse bend test GB/T 238-2013 Metallic materials—Wire—Reverse bend test GB/T 701-1997 Hot-rolled low carbon steel wire rods GB/T 701-2008 Hot rolled low carbon steel wire rods GB/T 2972-1991 Zinc-coated steel wire—Test method for uniformity of zinc coating on wire by the copper sulphate dip GB/T 2972-2016 Test method for uniformity of zinc coating on zinc-coated steel wire by the copper sulphate dip GB/T 2973-1991 Zinc-coated steel wire—Test method for weight of zinc coating GB/T 2973-2004 Zinc coated steel wire test method for gravimetric determination of zinc coating GB 2976-1988 Metallic materials—Wire—Wrapping test GB/T 2976-2004 Metallic materials—Wire—Wrapping test GB/T 2976-2020 Metallic materials—Wire—Wrapping test GB/T 4354-1994 Hot-rolled quality carbon steel wire rods GB/T 4354-2008 Hot rolled quality carbon steel wire rods GB/T 4354-2025 Hot-rolled quality carbon steel wire rods