塑料管道系统。热塑塑料压力管道用的弹性密封环型接头和机械接头。外部液压条件下防漏密封试验方法。
Plastics piping systems. elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping. test method for leaktightness under external hydrostatic pressure.
塑料管道系统。土壤和废料排出用热塑管道系统。粘接处密封度试验方法。
Plastics piping systems. Thermoplastics piping systems for soil and waste discharge. Test method for airtightness of joints.
塑料管道系统。土壤和废料排出用热塑管道系统。粘接处密封度试验方法。
Plastics piping systems. Thermoplastics piping systems for soil and waste discharge. Test method for airtightness of joints.
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