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。
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（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。
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.
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