美利体育登录入口官网:BS EN 714:1995(1999)*BS 2782-11 MTD 1123F:1995 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 无端部推力的内部静水压力下的密封性试验方法
Thermoplastics piping systems — Non - end - load - bearing elastomeric sealing ring type joints between pressure pipes and moulded fittings — Test method for leaktightness under internal hydrostatic pressure without end thrust