GB/T 12756-1991 Steel wire ropes for rubber hose

GB/T 12756-2018 Zinc-coated steel wire ropes for high-pressure rubber hose

GB 8707 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 239-1999 Metallic materials wire torsion test GB/T 239.1-2012 Metallic materials—Wire—Part 1:Simple torsion test GB/T 239.1-2023 Metallic materials—Wire—Part 1:Simple torsion test GB/T 239.2-2012 Metallic materials—Wire—Part 2:Reverse torsion test GB/T 239.2-2023 Metallic materials—Wire—Part 2:Reverse torsion test GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 2104-1988 Steel wire ropes—Packing, marking and certificate—General requirements GB/T 2104-2008 Steel wire ropes—Packing,marking and certificate—General requirements 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/T 8358-1987 Method of breaking tensile test for steel wire ropes GB/T 8358-2006 Method of breaking tensile test for steel wire ropes GB/T 8358-2014 Steel wire ropes—Determination of measured breaking force GB/T 8358-2023 Steel wire ropes—Determination of breaking force GB/T 2104-2025 General rules of packing, marking and quality certificate for steel wire ropes