GB/T 6725-2017 General requirements of cold forming steel sections

GB/T 6725-2008 Cold forming steel sections

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 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 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 699-1999 Quality carbon structural steels GB/T 699-2015 Quality carbon structure steels GB/T 700-1988 Carbon structural steels GB/T 700-2006 Carbon structural steels GB/T 714-2000 Structural steel for bridge GB/T 714-2008 Structural steel for bridge GB/T 714-2015 Structural steel for bridge GB/T 714-2025 Structural steel for bridge GB/T 1591-1994 High strength low alloy structural steels GB/T 1591-2008 High strength low alloy structural steels GB/T 1591-2018 High strength low alloy structural steels 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 2518-1988 Continual hot-dip zinc-coated steel sheets and strips GB/T 2518-2004 Continuous hot-dip zinc-coated steel sheets and strips GB/T 2518-2008 Continuously hot-dip zinc-coated steel sheet and strip GB/T 2518-2019 Continuously hot-dip zinc and zinc alloy coated steel sheet and strip GB/T 2650-1989 Method of impact test for welded joint GB/T 2650-2008 Impact test methods on welded joints GB/T 2650-2022 Destructive tests on welds in metallic materials—Impact tests GB/T 2651-1989 Method of tensile test for welded joint GB/T 2651-2008 Tensile test method on welded joints GB/T 2651-2023 Destructive tests on welds in metallic materials—Transverse tensile test 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 3280-1992 Cold rolled stainless steel sheets and plates GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip GB/T 3524-1992 Hot-rolled cardon and low alloy structural steel strips GB/T 3524-2005 Hot-rolled carbon and low alloy structural steel strips GB/T 3524-2015 Hot-rolled carbon and low alloy structural steel strips GB/T 4171-2000 Superior atmospheric corrosion resisting structural steel GB/T 4171-2008 Atmospheric corrosion resisting structural steel GB/T 6723-1986 Cold forming sectional steel—Open sectional steel for general structure—Demension, form, weight and permissible deviations GB/T 6723-2008 Cold forming sectional steel—Open sectional steel for general structure—Dimensions,shape,weight and permissible tolerances GB/T 6723-2017 Cold forming open section steel for general structure GB/T 6726-1986 Cold forming sectional steel for cargo vehicle—Demension, form, weight and permissible deviations GB/T 6726-2008 Cold forming sectional steel for vehicles—Dimensions,shape,weight and tolerances GB/T 6728-2002 Cold formed steel hollow sections for general structure—Dimensions,shapes,weight and permissble deviations GB/T 6728-2017 Cold forming hollow sectional steel for general structure GB/T 6728-2025 Cold forming sectional steel for general structure GB/T 12754-1991 Coloured paint coat steel plates and strips GB/T 12754-2006 Prepainted steel sheet GB/T 12754-2019 Prepainted steel sheet and strip GB/T 33162-2016 Continuously hot-rolled steel sheet and strip for cold-forming steel sections YB/T 081-1996 Rule for rounding off of numberical values and judgement of testing values for technical standards of metallurgy YB/T 081-2013 Metallurgical technology standards for numerical rounding and determination of testing values