Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes seo-ignore ISO 23920 specifies a method

ISO 23920 specifies a method for the quantification of ammonia by ion chromatography in mainstream smoke using ISO 20778 smoking parameters

1   These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance

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It also specifies requirements for the manufacturer concerning production

before looking at how to protect people against electric shock hazards

Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes seo-ignore ISO 23920 specifies a method1 Scope This International Standard specifies a test method for determining the resistance to slow crack growth of polyolefin pipes, expressed in terms of time to failure in a hydrostatic pressure test on a pipe with machined longitudinal notches in the outside surface. The test is applicable to pipes of wall thickness greater than 5 mm.