black steel pipe

例句：

1. 1. The construction crewused black steel pipes to reinforce the foundation.
   施工队使用黑色钢管加固地基。
2. 2. Thepipeline was made of black steel pipes thatcould withstand high pressure.
   该管道由黑色钢管制成，能够承受高压。
3. 3. Theblack steel pipe was a crucial part ofthe new water supply system.
   黑色钢管是新供水系统的关键部分。