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    Plastics piping systems. elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping. test method for leaktightness under external hydrostatic pressure.

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    Plastics piping systems. Thermoplastics piping systems for soil and waste discharge. Test method for airtightness of joints.

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  • 塑料管道系统土壤废料排出用热塑管道系统粘接处密封试验方法

    Plastics piping systems. Thermoplastics piping systems for soil and waste discharge. Test method for airtightness of joints.

    youdao

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