GB/T 42541-2023 Coated steel pipes for gas piping

GB/T 1725-2007 Paints,varnishes and plastics—Determination of non-volatile-matter content GB/T 1728-2020 Determination of drying time of coating and putty films GB/T 1771-1991 Paints and varnishes—Determination of resistance to neutral salt spray GB/T 1771-2007 Paints and varnishes—Determination of resistance to neutral salt spray(fog) GB/T 1865-1997 Paints and varnishes—Artificial weathering and exposure to artificial radiation—Filtered xenon-arc radiation GB/T 1865-2009 Paints and varnishes—Artificial weathering and exposure to artificial radiation—Exposure to filtered xenon-arc radiation 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 3091-2001 Welded steel pipe for low pressure liquid delivery GB/T 3091-2008 Welded steel pipes for low pressure liquid delivery GB/T 3091-2015 Welded steel pipes for low pressure liquid delivery GB/T 3091-2025 Welded steel pipes for low pressure fluid delivery GB/T 4472-1984 General rule for determination of density and relative density for chemical products GB/T 4472-2011 Detemination of density and relative density for chemical products GB/T 4956-2003 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness-Magnetic method GB/T 4956-2025 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method GB/T 6554-2003 Resin based reactive compounds used for electrical insulation—Part 2:Methods of test—Methods for coating pourders for electrical purposes GB/T 6739-1996 Determination of film hardness by pencil test GB/T 6739-2006 Paints and varnishes—Determination of film hardness by pencil test GB/T 6739-2022 Paints and varnishes—Determination of film hardness by pencil test GB/T 6750-2007 Paints and varnishes—Determination of density—Pyknometer method GB/T 1724-2019 Paints,varnishes and printing inks—Determination of fineness of grind GB/T 6753.2 GB/T 6753.3 GB/T 8163-1999 Seamless steel tubes for liquid service GB/T 8163-2008 Seamless steel tubes for liquid service GB/T 8163-2018 Seamless steel pipes for liquid service GB/T 9269-1988 Determination of viscosity of architectural paints and coatings—Stormer viscosimeter method GB/T 9269-2009 Determination of viscosity of paints and coatings—Stormer viscosimeter method GB/T 9274-1988 Paints and varnishes—Determination of resistance to liquids GB/T 9286-1998 Paints and varnishes—Cross cut test for films GB/T 9286-2021 Paints and varnishes—Cross-cut test 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 21782.13-2009 Coating powders—Part 13:Particle size analysis by laser diffraction GB/T 23987-2009 Paints and varnishes—Exposure of coatings to artificial weathering—Exposure to fluorescent UV lamps and water GB/T 23987.3-2025 Paints and varnishes—Methods of exposure to laboratory light sources—Part 3:Fluorescent UV lamps GB/T 30062-2013 Terminology of steel pipes and tubes GB 30981-2014 Limit of harmful substances of anticorrosion coatings for construction steel structure GB 30981-2020 Limit of harmful substances of industrial protective coatings GB 30981.1-2025 Limit of harmful substances of coatings—Part 1:Architectural coatings GB 30981.2-2025 Limit of harmful substances of coatings—Part 2:Industrial coatings GB/T 37594-2019 Technical specification for anti-UV three-layer external fusion powder coating corrosion protection for steel pipe GB/T 39636-2020 Specification of fusion-bonded epoxy external coatings for steel pipeline HG/T 3668-2020 Zinc-rich base paint HG/T 3668-2009 Zinc-rich undercoat。 HG/T 3668-2000 Zinc-rich undercoating JB/T 6570-2020 The determination method of magnetic content for ordinary abrasives JB/T 6570-2020 JB/T 6570-2007 The content of magnetic materials in ordinary abrasive JB/T 6570-2007 for measurement method JB/T 6570-1993 JBT 6570-1993 Test method for magnetic content of general abrasives JG/T 25-2017 Test method for temperature change resistance of architectural coatings JG/T 25-1999 Determination for freeze-thaw resistance of film of building coatings SY/T 0040-2013 Pipe coating anti-impact test method (drop hammer test method) SY/T 0040-1997 Test method for impact resistance of pipeline coatings (drop hammer test method) SY 0063-1992 Pipeline corrosion prevention layer leak testing method SY/T 4113.3-2019 Test methods for pipeline coating performance - Part 3: Cathode separation testing SY/T 4113.5-2019 Testing methods for coating performance of pipelines - Part 5: Bend resistance test SY/T 4113.7-2020 SY/T 4113.7-2020 Test Methods for Pipeline Coating Properties - Part 7: Thickness Testing SY/T 4113.9-2020 Test methods for pipeline protective coatings - Part 9: Immersion in liquid media resistance test