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。
Detailed design method and design principles for buried flexible plastic drainage pipe which differs entirely from traditional rigid pipe are introduced systemically.
本文系统的介绍了和传统刚性管截然不同的埋地柔性管道的设计原则、具体的设计方法。
The flexible pips are made by one kind of steel alloyed and the macromolecule plastic composite pipe (lean pipe). The outer and inner layers of the pipe are coated composite plastics.
线棒——是由一种钢合金与高分子塑料的复合管，其外层与内层均为复合塑料涂层，通过粘合剂与中间层钢合金管道复合成一体的柔性管道。
Flexible pipe (also called wire road coated with plastic), is the welding steel pipe coated plastic resin. To prevent separation between coating and steel, special adhesive is used.
线棒（也称覆塑管），是带有塑料涂层的焊接钢管，为防止涂层与钢管分离，它们之间使用特殊的粘合接。
Practice for Underground Installation of Flexible Reinforced Thermosetting Resin Pipe and Reinforced Plastic Mortar Pipe (08.
柔性增强热固性树脂管和增强塑料砂浆管的地下安装惯例（08。
Practice for Underground Installation of Flexible Reinforced Thermosetting Resin Pipe and Reinforced Plastic Mortar Pipe (08.
柔性增强热固性树脂管和增强塑料砂浆管的地下安装惯例（08。
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