About
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Secretariat: JISC (Japan)
Committee Manager: -
Chairperson (until end 2026):Mr Toru Kurita
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ISO Technical Programme Manager [TPM]:ISO Editorial Manager [EM]:
- Creation date: 1970
Scope
Standardization of pipes, fittings, valves and auxiliary equipments intended for the transport of fluids and made from all types of plastic materials, including all types of reinforced plastics.
Metal fittings used with plastics pipes are also included.
This standardization includes - for pipes, flanges, fittings, valves and auxiliary equipments - dimensions and their tolerances; requirements for chemical, mechanical and physical properties and appropriate test methods; requirements and test methods for other properties relevant to particular applications; temperature and pressure ratings.
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This committee contributes with 6 standards to the following Sustainable Development Goal:
| Reference | Title | Type |
|---|---|---|
| ISO/TC 138/SC 1 | Plastics pipes and fittings for soil, waste and drainage (including land drainage) | Subcommittee |
| ISO/TC 138/SC 2 | Plastics pipes and fittings for water supplies | Subcommittee |
| ISO/TC 138/SC 3 | Plastics pipes and fittings for industrial applications | Subcommittee |
| ISO/TC 138/SC 4 | Plastics pipes and fittings for the supply of gaseous fuels | Subcommittee |
| ISO/TC 138/SC 5 | General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications | Subcommittee |
| ISO/TC 138/SC 6 | Reinforced plastics pipes and fittings for all applications | Subcommittee |
| ISO/TC 138/SC 7 | Valves and auxiliary equipment of plastics materials | Subcommittee |
| ISO/TC 138/SC 8 | Rehabilitation of pipeline systems | Subcommittee |
| ISO/TC 138/AG 0 | Advisory group | Working group |
| ISO/TC 138/AHG 1 | Symbols and definitions of geometric properties | Working group |
Liaison Committees to ISO/TC 138
The committees below can access the documents of ISO/TC 138:
| Reference | Title | ISO/IEC |
|---|---|---|
| ISO/TC 5 | Ferrous metal pipes and metallic fittings | ISO |
| ISO/TC 8/SC 3 | Piping and machinery | ISO |
| ISO/TC 61 | Plastics | ISO |
| ISO/TC 61/SC 2 | Mechanical behavior | ISO |
| ISO/TC 61/SC 9 | Thermoplastic materials | ISO |
| ISO/TC 131/SC 4 | Connectors and similar products and components | ISO |
| ISO/TC 185 | Safety devices for protection against excessive pressure | ISO |
Liaison Committees from ISO/TC 138
ISO/TC 138 can access the documents of the committees below:
| Reference | Title | ISO/IEC |
|---|---|---|
| ISO/TC 5 | Ferrous metal pipes and metallic fittings | ISO |
| ISO/TC 5/SC 1 | Steel tubes | ISO |
| ISO/TC 8/SC 3 | Piping and machinery | ISO |
| ISO/TC 61 | Plastics | ISO |
| ISO/TC 61/SC 1 | Terminology | ISO |
| ISO/TC 61/SC 2 | Mechanical behavior | ISO |
| ISO/TC 61/SC 9 | Thermoplastic materials | ISO |
| ISO/TC 67/SC 2 | Pipeline transportation systems | ISO |
| ISO/TC 153 | Valves | ISO |
| ISO/TC 185 | Safety devices for protection against excessive pressure | ISO |
| ISO/TC 193 | Natural gas | ISO |
| Date | Month | Location | TC/SC | Note |
|---|---|---|---|---|
| 21 | January 2025 | Virtual () | ISO/TC 138/SC 7 | |
| 5 | March 2025 | Delft (Netherlands) | ISO/TC 138/SC 7 | |
| 3 | June 2025 | Virtual () | ISO/TC 138/SC 6 |
* Information definite but meeting not yet formally convened
** Provisional
ISO/TC 138 - Secretariat
JISC (Japan)
Tokyo 103-0025
Japan