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ISO 18851:2015PublishedPlastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes and fittings — Test method to prove the structural design of fittingsISO 19220:2021PublishedPlastics piping systems for soil and waste discharge (low and high temperature) inside buildings — Styrene copolymer blends (SAN + PVC)ISO/TR 19480:2005PublishedPolyethylene pipes and fittings for the supply of gaseous fuels or water — Training and assessment of fusion operatorsISO 19893:2011PublishedPlastics piping systems — Thermoplastics pipes and fittings for hot and cold water — Test method for the resistance of mounted assemblies to temperature cyclingISO 19899:2010PublishedPlastics piping systems — Polyolefin pipes and mechanical fitting assemblies — Test method for the resistance to end load (AREL test)ISO/TS 20656-1:2017PublishedPlastics piping systems — General rules for structural design of glass-reinforced thermosetting plastics (GRP) pipes — Part 1: Buried pipesISO/TS 21003-7:2019PublishedMultilayer piping systems for hot and cold water installations inside buildings — Part 7: Guidance for the assessment of conformityISO 21003-2:2008PublishedMultilayer piping systems for hot and cold water installations inside buildings — Part 2: PipesISO 21004:2006PublishedPlastics piping systems — Multilayer pipes and their joints, based on thermoplastics, for water supplyISO 21138-2:2020PublishedPlastics piping systems for non-pressure underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) — Part 2: Pipes and fittings with smooth external surface, Type AISO 21138-3:2020PublishedPlastics piping systems for non-pressure underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) — Part 3: Pipes and fittings with non-smooth external surface, Type BISO 21138-1:2020PublishedPlastics piping systems for non-pressure underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) — Part 1: Material specification and performance criteria for pipes, fittings and systemsISO 21307:2017PublishedPlastics pipes and fittings — Butt fusion jointing procedures for polyethylene (PE) piping systemsISO 21751:2011PublishedPlastics pipes and fittings — Decohesion test of electrofusion assemblies — Strip-bend testISO 22391-2:2009PublishedPlastics piping systems for hot and cold water installations — Polyethylene of raised temperature resistance (PE-RT) — Part 2: PipesISO/TS 22499:2024PublishedThermoplastic pipes for the conveyance of fluids — Inspection of polyethylene butt fusion joints using phased array ultrasonic testingISO 23228:2011PublishedThermoplastics pipes for the conveyance of fluids — Determination of the stress-rupture resistance of moulding materials using plain strain grooved tensile (PSGT) specimensISO 23648:2026PublishedPlastics — Impinging flame test on water-filled plastic pipesISO/TS 23818-1:2026PublishedAssessment of conformity of plastics piping systems for the rehabilitation of existing pipelines — Part 1: Polyethylene (PE) materialISO/TS 23818-3:2026PublishedAssessment of conformity of plastics piping systems for the rehabilitation of existing pipelines — Part 3: Unplasticised poly(vinyl chloride) (PVC-U) materialISO/TS 23818-2:2021PublishedAssessment of conformity of plastics piping systems for the rehabilitation of existing pipelines — Part 2: Resin-fibre composite (RFC) materialISO 23856:2021PublishedPlastics piping systems for pressure and non-pressure water supply, drainage or sewerage — Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resinISO 23949:2023PublishedPlastics — Application of spread of flame test to plastic pipesISO 24033:2025PublishedPolyethylene of raised temperature resistance (PE-RT) pipes — Effect of time and temperature on the expected strengthISO/TS 24399:2025PublishedThermoplastic pipes for the conveyance of fluids — Inspection of polyethylene butt fusion joints using time of flight diffraction testing