... plastic-laying machine 塑料薄膜覆盖机 plastic-lined pipe 塑料衬里管 plastic-molding machine 塑料成型机 ...
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plastic lined steel pipe 塑料衬里钢管 ; 衬塑料钢管
Plastic-Lined Steel Pipe 塑料衬里钢管
lined with plastic compound pipe 衬塑复合管
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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。
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