您要查找的是不是：
- 异径HDPE管reducing HDPE pipe
- 管pipe
- HDPE管HDPE pipe
- 异径管接[机] reducing socket
- 穿插HDPE管HDPE Pipe Insertion
- 侧口异径三通side outlet reducing tee
- HDPE管内衬HDPE liner
- 外径outside diameter
- 管的vasal
- 异径泵[机] differential plunger pump
- 网管network management
- HDPE管混凝土HDPE-pipe concrete
- 异径度reducer factor
- 管路pipeline
- 品管QA
- 异径螺纹接头stepped thread adaptor
- 高管senior executive
- 弯管syphon
- 排气管vent-pipe
- 异径活塞[机] differential piston
