Not end-loadbearing elastomeric sealing ring type joints between thermoplastic pressure pipes and fittings - Test method for leaktightness under internal hydrostatic pressure without end thrust
热塑性塑料管道系统.压力管道和模制配件之间的非端部承载弹性密封环型接头.无端推力的内部静水压力下密封性试验方法;德文版EN 714:1994