标准摘要
[中文适用范围]： 本文件规定了评估热塑性塑料检查室或人孔立管轴的初始（短期）切向环刚度的测试方法。 [外文原描述]： This document specifies a test method for assessing the initial (short-term) tangential ring stiffness of riser shafts for thermoplastics inspection chambers or manholes.
英文名称Thermoplastics piping systems for non-pressure underground drainage and sewerage — Thermoplastics shafts or risers for inspection chambers and manholes — Determination of ring stiffness