GB/T 6983-2008 Soft magnetic iron

GB/T 6983-1986 Technical requirements for magnetic iron bars GB/T 6984-1986 Technical requirements for magnetic iron hot-rolled plates GB/T 6985-1986 Magnetic iron cold-rolled sheets

GB/T 6983-2022 Magnetic iron

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 222-2025 Steels and alloys—Permissible deviations of product analyzed chemical composition GB/T 226-1991 Etch test for macrostructure and defect of steels GB/T 226-2015 Test method for macrostructure and defect of steel by etching 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 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 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 247-2025 General rules of package, mark and certification for steel plate, sheet and strip GB/T 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 701-1997 Hot-rolled low carbon steel wire rods GB/T 701-2008 Hot rolled low carbon steel wire rods GB 702-1986 Hot-rolled round and square steels—Dimension, shape, weight and tolerance GB/T 702-2004 Hot-rolled round and square steel bars-Dimension,Shape,weight and tolerance GB/T 702-2008 Hot-rolled steel bars—Dimensions,shape,weight and tolerances GB/T 702-2017 Hot-rolled steel bars—Dimensions,shape,weight and tolerances GB/T 708-1988 Dimensions shape weight and tolerances for cold-rolled plates and sheets GB/T 708-2006 Dimension,shape,weight and tolerance for cold-rolled steel plates and sheets GB/T 708-2019 Dimension,shape,weight and tolerance for cold-rolled steel strip and sheet GB/T 709-1988 Dimensions, shape, weight and tolerances for hot-rolled plates and sheets GB/T 709-2006 Dimension,shape,weight and tolerances for hot-rolled steel plates and sheets GB/T 709-2019 Dimension,shape,weight and tolerance for hot-rolled steel strip,plate and sheet GB/T 711-1988 Hot-rolled quality carbon structural steel plates and wide strips GB/T 711-2008 Hot-rolled quality carbon structural steel plates、sheets and wide strips GB/T 711-2017 Hot-rolled quality carbon structural steel plates sheets and strips GB/T 905-1994 Dimension, shape, weight and tolerance for cold-drawn round, square and hexagonal steels GB/T 908-2008 Forged bars—Dimensions,shape,weight and tolerances GB/T 908-2019 Forged bars for dimensions,shape,weight and tolerances GB/T 2101-1989 General requirements of acceptance, packaging, marking and certification for section steel GB/T 2101-2008 General requirement of acceptance,packaging,marking,and certification for section steel GB/T 2101-2017 General requirement of acceptance,packaging,marking and certification for section steel 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 3078-1994 Technical requirements for quality structural steel cold drawn bars GB/T 3078-2008 Quality structural steel cold drawn bars GB/T 3078-2019 Quality structural steel cold drawn bars GB/T 3656-1983 Measurement methods of magnetic properties of electrical iron GB/T 3656-2008 Method of coercivity measurement for magnetically soft materials by pull out procedure GB/T 3656-2022 Methods of coercivity measurement of magnetic iron and magnetically soft alloy by pulling out procedure GB/T 4340.1-1999 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2009 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2024 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 13237-1991 Cold-rolled quality carbon structural steel sheets and strips GB/T 13237-2013 Cold rolled quality carbon structural steel sheets and strips GB/T 14981-1994 Dimenisions shape weight and tolerances for hot-rolled wire rods GB/T 14981-2004 Dimensions,shape,mass and tolerances for hot-rolled wire rods GB/T 14981-2009 Dimension,shape,mass and tolerance for hot-rolled round wire rod GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition YB/T 001 YB/T 004-1991 The technical specifications for hot rolled billets and steel billets YB/T 2011-2014 Continuous steel casting square billets and rectangular billets YB/T 2012-2014 Continuous cast steel billet 钢中各元素的化学分析方法的规范性引用文件见附录A(规范性附录)