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ISO 3126:2005PublishedPlastics piping systems — Plastics components — Determination of dimensionsISO 3127:1994PublishedThermoplastics pipes — Determination of resistance to external blows — Round-the-clock methodISO 3213:2009PublishedPolypropylene (PP) pipes — Effect of time and temperature on the expected strengthISO 3419:1981PublishedNon-alloy and alloy steel butt-welding fittingsISO 3458:2015PublishedPlastics piping systems — Mechanical joints between fittings and pressure pipes — Test method for leaktightness under internal pressureISO 3459:2022PublishedPlastic piping systems — Mechanical joints between fittings and pressure pipes — Test method for leaktightness under negative pressureISO 3501:2021PublishedPlastics piping systems — Mechanical joints between fittings and pressure pipes — Test method for resistance to pull-out under constant longitudinal forceISO 3503:2015PublishedPlastics piping systems — Mechanical joints between fittings and pressure pipes — Test method for leaktightness under internal pressure of assemblies subjected to bendingISO 3514:1976PublishedChlorinated polyvinyl chloride (CPVC) pipes and fittings — Specification and determination of densityISO 3545-1:1989PublishedSteel tubes and fittings — Symbols for use in specifications — Part 1: Tubes and tubular accessories with circular cross-sectionISO 3545-2:1989PublishedSteel tubes and fittings — Symbols for use in specifications — Part 2: Square and rectangular hollow sectionsISO 3603:1977PublishedFittings for unplasticized polyvinyl chloride (PVC) pressure pipes with elastic sealing ring type joints — Pressure test for leakproofnessISO 3633:2002PublishedPlastics piping systems for soil and waste discharge (low and high temperature) inside buildings — Unplasticized poly(vinyl chloride) (PVC-U)ISO 3994:2026PublishedPlastics hoses — Helical-thermoplastic-reinforced thermoplastics hoses for suction and discharge of aqueous materials — SpecificationISO 4023:2009PublishedRubber hoses and hose assemblies for steam — Test methodsISO 4059:1978PublishedPolyethylene (PE) pipes — Pressure drop in mechanical pipe-jointing systems — Method of test and requirementsISO 4065:2018PublishedThermoplastics pipes — Universal wall thickness tableISO 4076:2025PublishedPolyphenylsulfone (PPSU) — Effect of time and temperature on expected strengthISO 4080:2024PublishedRubber and plastics hoses and tubing, and their assemblies — Determination of permeability to gasISO 4132:1979PublishedUnplasticized polyvinyl chloride (PVC) and metal adaptor fittings for pipes under pressure — Laying lengths and size of threads — Metric seriesISO 4144:2003PublishedPipework — Stainless steel fittings threaded in accordance with ISO 7-1ISO 4145:1986PublishedNon-alloy steel fittings threaded to ISO 7-1ISO 4152:2021PublishedGlass‐reinforced thermosetting plastics (GRP) pipes — Determination of the apparent axial long‐term modulus of pipes subject to beam bendingISO 4179:2024PublishedDuctile iron pipes and fittings for pressure and non-pressure pipelines — Cement mortar liningISO/TR 4191:2014PublishedPlastics piping systems for water supply — Unplasticized poly(vinyl chloride)(PVC-U) and oriented PVC-U (PVC-O) — Guidance for installation