GB/T 43117-2023

This standard specifies a test method for determining the long-term ring creep properties of glass-reinforced thermosetting plastic (GRP) pipes under both wet and dry environmental conditions. It is applied in the quality control and design verification of GRP pipes used in water supply, sewage, and industrial fluid transport systems, where predicting long-term deformation under sustained internal pressure or soil loading is critical. The standard ensures that pipes meet durability requirements for buried or exposed installations in civil engineering and infrastructure projects.