ISO/NP 25146

Thermoplastic fittings for pressure piping systems — Crushing test (Revision of ISO 9853:1991 Injection-moulded unplasticized poly(vinyl chloride) (PVC-U) fittings for pressure pipe systems — Crushing test) ISO/NP 25146

Scope

This International Standard specifies a crushing test to determine the percentage deformation of thermoplastics fittings for pressure piping systems and recommends a basic specification and the test condition for thermoplastics pipes.
It applies to fittings made of unplasticized poly(vinyl chloride) (PVC-U), high-impact poly(vinyl chloride) (PVC-HI) (PVC-M), chlorinated poly(vinyl chloride)(PVC-C), Acrylonitrile-butadiene-styrene (ABS)，polyethylene(PE)，polypropylene(PP).