Glass reinforced thermosetting plastic (GRP) pipes — Test method for the determination of long-term pressure endurance strength (ISO 24690:2025)
< p class=" MsoBodyText" > < span lang=" EN-GB" > This document specifies a method for determining the long-term pressure endurance of glass-reinforced thermosetting plastics (GRP) pipes, based on the residual failure strength of test pieces after ageing for a specified time at specified internal pressure and temperature. The internal environment is specified in the referring standard. The external environment can be air or water.< / span>
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