GB/T 5310-2017 Seamless steel tubes and pipes for high pressure boiler

GB/T 5310-2008 Seamless steel tubes and pipes for high pressure boiler

GB/T 5310-2023 Seamless steel tubes and pipes for high pressure boiler

GB/T 230.1-2004 Metallic Rockwell hardness test—Part1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2009 Metallic materials—Rockwell hardness test—Part 1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2018 Metallic materials—Rockwell hardness test—Part 1:Test method GB/T 231.1-2002 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2009 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2018 Metallic materials—Brinell hardness test—Part 1: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 241-1990 Metal tubes—Hydrostatic pressure testing GB/T 241-2007 Metal materials—Tube—Hydrostatic pressure test GB/T 241-2025 Metallic materials—Tube—Hydrostatic pressure test GB/T 242-1997 Metallic materials—Tube—Drift expanding test GB/T 242-2007 Metal materials—Tube—Drift-expending test GB/T 246-1997 Metallic materials—Tube—Flattening test GB/T 246-2007 Metal materials—Tube—Flattening test GB/T 246-2017 Metallic materials—Tube—Flattening test GB/T 1979-2001 Standard diagrams for macrostructure and defect of structural steels GB/T 1979-2025 Evaluation of macrostructural defects in structural steels—Acid etching method and ultrasonic testing method GB/T 2102-1988 Acceptance, packing, marking, and certification of pipe GB/T 2102-2006 Acceptance, packing, marking and quality certification of steel pipe GB/T 2102-2022 Acceptance,packaging,marking and quality certification for steel tubular products 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 4336-2002 Standard test method for spark discharge atomic emission spectrometric analysis of carbon and low-Alloy steel(routine method) GB/T 4336-2016 Carbon and low-alloy steel—Determination of multi-element contents—Spark discharge atomic emission spectrometric method (routine method) 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 5777-2008 Seamless steel pipe and tubing methods for ultrasonic testing GB/T 6394-2017 Determination of estimating the average grain size of metal GB/T 7735-2016 Automated eddy current testing of seamless and welded(except submerged arc-welded) steel tubes for detection of imperfections GB/T 10561-2005 Steel—Determination of content of nonmetallic inclusions—Micrographic method using standards diagrams GB/T 11170-1989 Method for photoelectric emission spectroscopic analysis of stainless steel GB/T 11170-2008 Stainless steel—Determination of multi-element contents—Spark discharge atomic emission spectrometric method(Routine method) GB/T 12606-2016 Automated full peripheral flux leakage testing of seamless and welded(except submerged arc-welded) ferromagnetic steel tubes for the detection of longitudinal and/or transverse imperfections GB/T 13298-1991 Metal—Inspection method of microstructure GB/T 13298-2015 Inspection methods of microstructure for metals GB/T 15822-1995 Methods for magnetic particle testing GB/T 15822.1-2005 Non-destructive testing—Magnetic particle testing—Part 1:General principles GB/T 15822.1-2024 Non-destructive testing—Magnetic particle testing—Part 1:General principles GB/T 15822.2-2005 Non-destructive testing—Magnetic particle testing—Part 2:Detection media GB/T 15822.2-2024 Non-destructive testing—Magnetic particle testing—Part 2:Detection media GB/T 15822.3-2005 Non-destructive testing—Magnetic particle testing—Part 3:Equipment GB/T 15822.3-2024 Non-destructive testing—Magnetic particle testing—Part 3:Equipment GB/T 17395-1998 Dimensions、shapes、masses and tolerances of seamless steel tubes GB/T 17395-2008 Dimensions,shapes,masses and tolerances of seamless steel tubes GB/T 17395-2024 Dimensions,shapes,masses and tolerances of steel tubes GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition GB/T 20123-2006 Steel and iron—Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method) GB/T 20124-2006 Steel and iron—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas (Routine method) GB/T 31925-2015 Ultrasonic test methods of heavy wall thickness seamless steel pipes and tubes NB/T 47013.5-2015 Non-destructive testing of pressure equipment - Part 5: Penetrant testing YB/T 4149-2018 Continuous casting round tube billet YB/T 4149-2006 Continuously cast round billet for seamless steel tube rolling YB/T 5137-1998 Round blank of seamless steel tube for high pressure YB/T 5137-2007 High-pressure seamless round tube for hot rolling and forged steel tube blank YB/T 5137.1-2018 High-pressure heat-rolled and forged seamless steel tube blanks