piping and couplings meaning in Chinese
管道和管接头
Examples
- Pvc pipe and couplings , polyvinyl chloride , for underground fire service
地下消防装置用聚氯乙烯 - Pressure pipe and couplings , glass fiber - reinforced , for underground fire service
地下消防设备用玻璃纤维增强压力管道和管联接器