GB/T 6111-2018流体输送用热塑性塑料管道系统耐内压性能的测定国家标准
英文:Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure GB/T ...
英文:Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure GB/T ...