1. 管线用管：line pipe riser 普通隔水管 | line pipe 管线用管 | line poles 线极
2. 管系：line passing 交叉通路 | line pipe 管系 | line plan 线型图
3. 管线管：耦合 coupling | 管线管 line pipe | 锅炉用低压/中压/高压无缝钢管 low-medium-high pressure boiler tube
4. 管线;管路：line; phreatic 地水线 | line; pipe 管线;管路 | line; potential energy 位能线
1. Residents line up to get water with basins and pots from a water pipe in the yard of Model Town community on Thursday.
2. Shengli is one of China's largest oil and gas line pipe producers, said a draft prospectus posted on the Hong Kong stock exchange website yesterday.
3. Things that the former tenant didn't think was really necessary - like a working telephone line or a fully functioning water pipe.