GB/T 29168.4-2024 Petroleum and natural gas industries—Bends,fittings and flanges for pipeline transportation systems—Part 4:Cold bends

GB/T 29168.2-2024 Petroleum and natural gas industries—Bends,fittings and flanges for pipeline transportation systems—Part 2:Fittings

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 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 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 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 2970-1991 Thicker steel plate—Method for ultrasonic inspection GB/T 2970-2004 Thicker steel plates—Method for ultrasonic inspection GB/T 2970-2016 Method for ultrasonic testing of thicker steel plates GB/T 4157-2017 Laboratory testing of metals for resistance to sulfide stress crackingand stress corrosion cracking in H2S environment 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 5777-2019 Automated full peripheral ultrasonic testing of seamless and welded(except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections GB/T 6394-2002 Metal-methods for estimating the average grain size GB/T 6394-2017 Determination of estimating the average grain size of metal GB/T 8650-2015 Evaluation of pipeline and pressure vessel steels for resistance to hydrogen-induced cracking GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings GB/T 9445-1999 Qualification and certification for nondestructive testing personnel GB/T 9445-2005 Non-destructive testing—Qualification and certification of personnel GB/T 9445-2008 Non-destructive testing—Qualification and certification of personnel GB/T 9445-2015 Non-destructive testing—Qualification and certification of NDT personnel GB/T 9445-2024 Non-destructive testing—Qualification and certification of personnels GB/T 9711-2011 Petroleum and natural gas industries—Steel pipe for pipeline transportation systems GB/T 9711-2017 Petroleum and natural gas industries—Steel pipe for pipeline transportation systems GB/T 9711-2023 Petroleum and natural gas industries—Steel pipe for pipeline transportation systems GB/T 9711.1-1997 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions—Part 1:Pipes of requirements class A GB/T 9711.2-1999 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions—Part 2:Pipes of requirement class B GB/T 9711.3-2005 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions—Part 3:Pipes of requirements class C GB/T 11344-1989 Measuring thickness by ultrasonic pulse-echo contact method GB/T 11344-2008 Non-destructive testing—Practice for measuring thickness by ultrasonic pulse-echo contact method GB/T 11344-2021 Non-destructive testing—Ultrasonic thickness measurement GB/T 11345-1989 Method for manual ultrasonic testing and classification of testing results for ferritic steel welds GB/T 11345-2013 Non-destructive testing of welds—Ultrasonic testing—Techniques,testing levels,and assessment GB/T 11345-2023 Non-destructive testing of welds—Ultrasonic testing—Techniques, testing levels and assessment GB/T 15970.2-2000 Corrosion of metals and alloys—Stress corrosion testing—Part 2:Preparation and use of bent-beam specimens GB/T 17600.1-1998 Steel—Conversion of elongation values—Part 1:Carbon and low alloy steels GB/T 20490-2006 Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes—Ultrasonic testing for the detection of laminar imperfections GB/T 20490-2023 Non-destructive testing(NDT) methods of steel tubes—Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections GB/T 23257-2009 Polyethylene coating for buried steel pipeline GB/T 23257-2017 Polyethylene coating for buried steel pipeline GB/T 24259-2009 Petroleum and natural gas industries—Pipeline transportation systems GB/T 24259-2023 Petroleum and natural gas industries—Pipeline transportation systems GB/T 42664-2023 Non-destructive testing of steel tubes—Automated ultrasonic testing of the weldseam of welded steel tubes for the detection of longitudinal and/or transverse imperfections GB/T 42673-2023 Non-destructive testing of steel tubes—Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections GB/T 42677-2023 Non-destructive testing (NDT) methods of steel tubes—Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections GB 50251-2015 Code for design of gas transmission pipeline engineering GB 50253-2014 Code for design of oil transportation pipeline engineering SY/T 0315-2013 Steel pipe fusion-bonded epoxy powder coating technical specification SY/T 0315-2005 The technical specifications for a single-layer molten weld epoxy coating applied to steel pipes SY/T 0315-1997 Steel pipe welding epoxy powder coating technology standard

ISO 15590-4:2019