ISO 25780:2011
Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sewerage - Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin - Pipes with flexible joints intended to be installed us

Standard No.

ISO 25780:2011

Release Date

2011

Published By

International Organization for Standardization (ISO)

Latest

ISO 25780:2011

Scope

This International Standard specifies the properties of the piping system and its components made from glassreinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) for water supply, irrigation, drainage or sewerage systems with or without pressure. This International Standard is applicable to GRP-UP piping systems, with flexible joints, intended to be installed using jacking techniques. It specifies the characteristics of pipes made from GRP-UP, with or without aggregates or fillers and also specifies the test parameters for the test methods referred to in this International Standard. NOTE Pipes referred to in this International Standard are, because of their intended use, required to have a minimum nominal stiffness of at least SN 20000 (see 5.2.1). This International Standard is applicable to pipes and joints with a size range from DN100 to DN4000 which are intended to be used for the conveyance of water or sewage at temperatures up to 50 ℃, with or without pressure. It covers requirements to prove the design of the joint and specifies type test performance requirements for the joints as a function of the declared nominal pressure rating of the pipeline system and the required joint deflection capability of the system. GRP-fittings, used between pipe systems covered by this International Standard, shall be in accordance with ISO 10639 for water supply systems or ISO 10467 for drainage and sewerage systems, as applicable. In a pipe-work system, pipes of different nominal pressure and stiffness ratings may be used together.

ISO 25780:2011 Referenced Document

• ISO 10466 Glass-reinforced thermosetting plastics (GRP) pipes - Test method to prove the resistance to initial ring deflection*， 2021-03-31 Update
• ISO 10467 Plastics piping systems for pressure and non-pressure drainage and sewerage - Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin*， 2018-05-31 Update
• ISO 10468 Glass-reinforced thermosetting plastics (GRP) pipes — Determination of the ring creep properties under wet or dry conditions*， 2023-07-01 Update
• ISO 10471 Glass-reinforced thermosetting plastics (GRP) pipes - Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions*， 2018-05-01 Update
• ISO 10639 Plastics piping systems for pressure and non-pressure water supply - Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin*， 2017-10-01 Update
• ISO 10928 Plastics piping systems*， 2024-03-01 Update
• ISO 10952 Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Determination of the resistance to chemical attack for the inside of a section in a deflected condition*， 2021-03-01 Update
• ISO 2078 Textile glass — Yarns — Designation*， 2022-03-16 Update
• ISO 3126 Plastics piping systems - Plastics components - Determination of dimensions
• ISO 4633 Rubber seals — Joint rings for water supply, drainage and sewerage pipelines — Specification for materials*， 2023-07-01 Update
• ISO 604:2002 Plastics - Determination of compressive properties
• ISO 75-2:2004 Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
• ISO 7685 Glass-reinforced thermosetting plastics (GRP) pipes — Determination of initial ring stiffness*， 2019-07-11 Update
• ISO 8639 Glass-reinforced thermosetting plastics (GRP) pipes and fittings — Test methods for leaktightness and proof of structural design of flexible joints*， 2023-04-01 Update

ISO 25780:2011 history

• 2011 ISO 25780:2011 Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sewerage - Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin - Pipes with flexible joints intended to be installed us