本文件规定了埋地热塑性塑料非压力管道系统用弹性密封环式接头密封性的试验方法。 除非参考标准中另有规定，试验应在以下基本试验压力下进行: -p1:内部负压（部分真空）； -p2:内部静水压力低； -p3:较高的内部静水压力。 它还描述了进行试验的以下四种试验条件: a） 条件a:无任何额外的径向或角度偏转； b） 工况b:径向偏转； c） 条件c:有角偏转； d） 条件d:同时存在角度和径向偏转。 参考标准中规定了试验压力和试验条件的适用选择。

This document specifies a test method for determining the leaktightness of elastomeric sealing ring type joints for buried thermoplastics non-pressure piping systems. Unless otherwise specified in the referring standard, the tests are carried out at the following basic test pressures: — p1: internal negative air pressure (partial vacuum); — p2: a low internal hydrostatic pressure; — p3: a higher internal hydrostatic pressure. It also describes the following four test conditions under which the tests are performed: a) Condition A: without any additional diametric or angular deflection; b) Condition B: with diametric deflection; c) Condition C: with angular deflection; d) Condition D: with simultaneous angular and diametric deflection. The applicable selection of the test pressure(s) and the test condition(s) is/are specified in the referring standard.