YB/T 024-2008 Steel strips for cable armouring

YB/T 024-1992 Steel belt used in insulated cable

YB/T 024-2021 Steel Belt for Corrugated Cable

GB/T 1839-2003 Test method for gravimetric determination of the mass per unit area of galvanized coatings on steel products GB/T 1839-2008 Test method for gravimetric determination of the mass per unit area of galvanized coatings on steel products GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition GB/T 222-1984 Method of sampling steel for determination of chemical composition and permissible variations for product analysis GB/T 222-2006 Permissible tolerances for chemical composition of steel products 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 229-1994 Metallic materials—Charpy notch impact test GB/T 229-2007 Metallic materials—Charpy pendulum impact test method GB/T 229-2020 Metallic materials—Charpy pendulum impact test method GB/T 232-1999 Metallic materials—Bend test GB/T 232-2010 Metallic materials—Bend test GB/T 232-2024 Metallic materials—Bend testing method GB/T 235-1999 Metallic materials—Sheet and strip 3mm thick or less—Reverse bend test GB/T 235-2013 Metallic materials—Sheet and strip—Reverse bend test GB/T 247-1997 General rule of acceptance, package, mark and certification for steel plates(sheets) and strips GB/T 247-2008 General rule of package,mark and certification for steel plates(sheets)and strips 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 2975-1998 Steel and steel products—Location and preparation of test pieces for mechanical testing GB/T 2975-2018 Steel and steel products—Location and preparation of samples and test pieces for mechanical testing GB/T 470-1997 Zinc ingots GB/T 470-2008 Zinc ingots GB/T 710-1991 Hot-rolled quality carbon structural steel sheets and strips GB/T 710-2008 Hot-rolled quality carbon structural steel sheets and strips GB/T 912-1989 Hot-rolled plain carbon and low alloy structural steel sheets and strips GB/T 247-2025 General rules of package, mark and certification for steel plate, sheet and strip GB/T 222-2025 Steels and alloys—Permissible deviations of product analyzed chemical composition GB/T 1839-2025 Test method for gravimetric determination of the mass per unit area of galvanized coatings on steel products