GB/T 28897-2021 Steel-plastic compound pipes and fittings for fluid service

GB/T 28897-2012 Steel pipes of complex plastic

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 244-1997 Metallic materials—Tube—Bend test GB/T 244-2008 Metallic materials-tube—Bend test GB/T 244-2020 Metallic materials—Tube—Bend test method 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 1033.1-2008 Plastics—Methods for determining the density of non-cellular plastics—Part 1:Immersion method,liquid pyknometer method and titration method GB/T 1040.1-2006 Plastics—Determination of tensile properties—Part 1:General principles GB/T 1040.1-2018 Plastics—Determination of tensile properties—Part 1:General principles GB/T 1040.1-2025 Plastics—Determination of tensile properties—Part 1:General principles GB/T 1040.2-2006 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1040.2-2022 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1633-2000 Plastics—Thermoplastic materials—Determination of Vicat softening temperature(VST) GB/T 1633-2025 Plastics—Thermoplastic materials—Determination of Vicat softerning temperature(VST) GB/T 1732-1993 Determination of impact resistance of film GB/T 1732-2020 Determination of impact resistance of coating films 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 2914-1999 Plastics—Homopolymer and copolymer resins of vinyl chloride-Determination of volatile matter(including water) GB/T 2914-2008 Plastics—Homopolymer and copolymer resins of vinyl chloride—Determination of volatile matter (including water) 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 3287-2011 Malleable cast iron pipe fittings 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 5135.20-2010 Automatic sprinkler system—Part 20:Coating steel pipe GB/T 5267.3-2008 Fasteners—Hot dip galvanized coatings GB/T 5721-1993 General rules of identification, packaging, transportation and storage for rubber sealing products 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 6742-1986 Bend test for coating (cylindrical mandrel) GB/T 6742-2007 Paints and varnishes—Bend test(cylindrical mandrel) GB/T 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 1:Parallel internal and taper external threads GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 2:Taper internal and external threads 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 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 9124.1-2019 Steel pipe flanges—Part 1:PN designated GB/T 9124.2-2019 Steel pipe flanges—Part 2:Class designated 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 10002.1-1996 Unplasticized polyvinyl chloride (PVC-U) pipe for water supply GB/T 10002.1-2006 Unplasticized poly(vinyl chloride)(PVC-U)pipes for water supply GB/T 10002.1-2023 Unplasticized poly (vinyl chloride) (PVC-U) pipes for water supply GB 11115-1989 Low density polyethylene resin GB/T 11115-2009 Polyethylene(PE) resin GB/T 11911-1989 Water quality—Determination of irom and manganese—Flame atomic absorption spectrometric method GB/T 12459-1990 Steel butt-welding seamless pipe fittings GB/T 12459-2005 Steel butt-welding seamless pipe fittings GB/T 12459-2017 Steel buttwelding pipe fittings—Types and parameter GB/T 12459-2025 Steel buttwelding piping fittings—Types and parameters GB/T 12716-2002 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads GB/T 12716-2011 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads GB/T 13295-2019 Ductile iron pipes,fittings and accessories for water or gas applications GB/T 13384-1992 General specifications for packagings of mechanical and electrical products GB/T 13384-2008 General specifications for packing of mechanical and electrical product GB/T 13401-1992 Steel plate butt-welding pipe fittings GB/T 13401-2005 Steel plate butt-welding pipe fittings GB/T 13401-2017 Steel buttwelding pipe fittings—Technical specification GB/T 13401-2025 Steel buttwelding piping fittings—Technical specification GB/T 13793-1992 Longitudinal electric resistance welded steel tubes GB/T 13793-2008 Steel pipes with a longitudinal electric (resistance) weld GB/T 13793-2016 Steel pipes with a longitudinal electric(resistance) weld GB/T 16938-1997 Fasteners—General requirements for blots,screws,studs and nuts GB/T 16938-2008 Fasteners—General requirements for bolts,screws,studs and nuts GB/T 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system GB/T 18742.1-2002 Polypropylene piping systems for hot and cold water installations—Part 1:General GB/T 18742.1-2017 Polypropylene(PP) piping systems for hot and cold water installations—Part 1:General GB/T 18992.1-2003 Crosslinked polyethylene(PE-X) piping systems for hot and cold water installations—Part 1:General GB/T 18993.1-2003 Chlorinated poly(vinyl chloride) piping system for hot and cold water installations—Part 1:General GB/T 18993.1-2020 Chlorinated poly (vinyl chloride) (PVC-C) piping systems for hot and cold water installations—Part 1:General GB/T 19466.6-2009 Plastics—Differential scanning calorimetry(DSC)—Part 6:Determination of oxidation induction time(isothermal OIT)and oxidation induction temperature(dynamic OIT) GB/T 23257-2009 Polyethylene coating for buried steel pipeline GB/T 23257-2017 Polyethylene coating for buried steel pipeline GB/T 28604-2012 Rubber seals used in living-water and drinking-water supply pipes and fittings GB/T 36019-2018 Specification for grooved pipe fittings CJ/T 175-2002 Polyethylene of raised temperature resistance(PE-RT)piping systems for hot and cold water installations SY/T 5037-2023 Underground arc welding steel pipe for general fluid conveyance pipeline SY/T 5037-2018 Underground arc welding steel pipe for general fluid conveyance pipeline SY/T 5037-2012 Submerged arc welded steel pipe for general fluid conveying pipelines SY/T 5037-2000 SY/T 5037-2000 Screw-Gap Soldering Steel Pipe for Low-Pressure Pipeline Transportation System