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
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圈型接头 无端推力的内部静水压力下密封性试验方法
发布日期:
1995-05-15
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