Steel pipe is the most common, but fiberglass pipe, cement-lined steel pipe, and flexible plastic pipe are also used.
出油管线最普遍地由钢管组成，不过也使用玻璃纤维管、水泥衬里钢管以及柔性塑料管。
2
The gym teachers lined us up against the cement walls.
体操老师们让我们靠水泥墙排成队。
《柯林斯英汉双解大词典》
3
To ensure stability of the whole structure of steel-lined, grouting is always applied into void treatment in which chemical grouting was supplementary for cement grouting.