本文件规定了测定玻璃增强热固性塑料（GRP）管环蠕变性能的方法。特性包括蠕变系数和长期特定蠕变刚度。测试在潮湿（完全浸入水中）或干燥条件下进行。 干蠕变试验通常用于评估和控制原材料的稠度。湿蠕变试验通常用于确定模拟使用条件下的长期蠕变性能。

This document specifies methods for determining the ring creep properties for glass-reinforced thermosetting plastics (GRP) pipes. Properties include the creep factor and the long-term creep stiffness. Testing is performed under either wet (total immersion in water) or dry conditions. Dry creep testing is typically performed for the assessment and control of raw material consistency. Wet creep testing is typically undertaken to determine the long-term creep performance in simulated use conditions.