Standardization of test methods and basic specifications of material and product properties of thermoplastic pipes and fittings including their joints and accessories.

Quick links


Published ISO standards *


ISO standards under development *

Participating members
Observing members

* number includes updates

Reference Title Type
ISO/TC 138/SC 5/WG 5   Polyolefin pipes Working group
ISO/TC 138/SC 5/WG 12   Polyolefin pipe fitting assemblies Working group
ISO/TC 138/SC 5/WG 17   Alternative test methods Working group
ISO/TC 138/SC 5/WG 20   Slow crack growth (SCG) Working group
ISO/TC 138/SC 5/WG 22   Thermoplastics pipes for the transport of fluids Working group
Liaison Committees to ISO/TC 138/SC 5

The committees below can access the documents of ISO/TC 138/SC 5:

Reference Title ISO/IEC
ISO/TC 61/SC 2 Mechanical behavior ISO
ISO/TC 61/SC 5 Physical-chemical properties ISO
ISO/TC 61/SC 11 Products ISO
ISO/TC 135/SC 3 Ultrasonic testing ISO
ISO/TC 138/SC 2 Plastics pipes and fittings for water supplies ISO


Liaison Committees from ISO/TC 138/SC 5

ISO/TC 138/SC 5 can access the documents of the committees below:

Reference Title ISO/IEC
ISO/TC 61 Plastics ISO
ISO/TC 61/SC 2 Mechanical behavior ISO
Date Month Location TC/SC Note
23 October 2024 Saint-Denis (France) ISO/TC 138/SC 5 **

* Information definite but meeting not yet formally convened
** Provisional

ISO/TC 138/SC 5 - Secretariat

NEN [Netherlands]

Royal Netherlands Standardization Institute
Vlinderweg 6
NL-2623 AX Delft

Tel: +31 15 2 690 390