Overview
ISO 7682:2003 defines requirements for solid-wall acrylonitrile‑butadiene‑styrene (ABS) pipes and fittings used for soil and waste discharge (low and high temperature) inside buildings. The standard covers materials, geometry, mechanical and physical characteristics, performance testing, joint types and system assembly-excluding buried pipework. It applies to pipework for domestic wastewater, associated ventilation and internal rainwater disposal, and supports jointing by elastomeric sealing rings, solvent cementing, or integral dual‑purpose sockets.
Key topics and technical requirements
- Scope and application: Internal soil/waste discharge, ventilation and rainwater systems; not intended for underground use.
- Material: ABS copolymer/terpolymer per ISO 7245; limited use of ASA (ISO 7246) and permitted production regrind (no external recyclables).
- Jointing methods: Elastomeric ring-seal joints, solvent-cement joints or dual-purpose sockets; two system variants (system I and II) are provided for type N ring-seal sockets.
- Geometrical characteristics: Specifies measurement methods (ISO 3126), mean outside diameters, wall thicknesses, effective pipe lengths, socket types (S, N, L), chamfering and z‑lengths for fittings.
- Mechanical & physical tests: Includes requirements and test parameters for impact resistance, resistance to elevated temperature cycling, dimensional stability (longitudinal reversion), water absorption and Vicat softening temperature.
- Performance & sealing: Watertightness, airtightness of joints, and requirements for sealing rings and adhesives.
- General requirements: Smooth, defect‑free surfaces; uniform color through wall (recommended grey, black or white); marking and installation guidance.
- Regulatory notes: No specific fire behaviour requirements in the standard-national fire regulations apply.
Practical applications and users
ISO 7682 is essential for:
- Manufacturers of ABS pipes, fittings and fabricated components (ensures consistent dimensions, materials and joint compatibility).
- Plumbing and drainage designers / specifiers who select materials and joint types for internal soil and waste systems.
- Installers and contractors following prescribed jointing and installation requirements for reliable watertight performance.
- Regulatory authorities and procurement teams evaluating compliance for building services.
Typical applications: internal soil and waste discharge stacks, high‑temperature waste lines, sanitary drainage, ventilation ducts associated with drainage, and internal rainwater downpipes.
Related standards
Standards referenced or commonly used with ISO 7682 include ISO 7245, ISO 7246, ISO 3126, EN 681‑1/2, EN 727, EN 1053/1054/1055 and EN 1411 for complementary material, test and joint performance requirements.
Keywords: ISO 7682, ABS piping, plastics piping systems, soil and waste discharge, elastomeric sealing rings, solvent cement, building drainage, ABS fittings.