T/CECS 10121-2021 Ductile iron polyethylene composite pipes

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 1040.2-2006 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 2790-1995 Adhesives, 180° peel strength test method for a flexible-bonded-to-rigid test specimen assembly GB/T 2918-1998 Plastics—Standard atmospheres for conditioning and testing GB/T 2918-2018 Plastics—Standard atmospheres for conditioning and testing GB/T 3682.1-2018 Plastics—Determination of the melt mass-flow rate(MFR)and melt volume-flow rate(MVR)of thermoplastics—Part 1:Standard method GB/T 4956-2003 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness-Magnetic method GB/T 9345.1-2008 Plastics—Determination of ash—Part 1:General methods GB/T 13295-2003 Ductile iron pipes,fittings and accessories for water or gas applications GB/T 13295-2008 Ductile iron pipes,fittings and accessories for water or gas applications GB/T 13295-2013 Ductile iron pipes,fittings and accessories for water or gas applications GB/T 13295-2019 Ductile iron pipes,fittings and accessories for water or gas applications GB/T 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system GB/T 17456.1-2009 Ductile iron pipes—External zinc-based coating—Part 1:Metallic zinc with finishing layer 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 21873-2008 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials GB/T 24596-2009 Ductile iron pipes and fittings—Polyurethane coatings GB/T 24596-2021 Ductile iron pipes and fittings—Polyurethane coatings GB/T 28897-2012 Steel pipes of complex plastic GB/T 28897-2021 Steel-plastic compound pipes and fittings for fluid service CJ/T 192-2004 Composite steel pipe stainless steel lined CJ/T 192-2017 Composite steel pipe stainless steel lined HG/T 4337-2012 Non-solvent liquid epoxy coating for steel water piping HG/T 20538-2016 Selection series of plastic-lined pipe and fittings QB 1648-1992 Colored polyethylene pelletizing masterbatch SH/T 1770-2010 Determination of moisture content in polyethylene plastic GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system GB/T 17456.1-2025 Ductile iron pipes,fittings and accessories—External zinc-based coating—Part 1: Metallic zinc and zinc alloy with finishing layer GB/T 4956-2025 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method GB/T 21873-2025 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials QB/T 1648-2025 Polyethylene Masterbatch。