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。
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。
Steel pipe is the most common, but fiberglass pipe, cement-lined steel pipe, and flexible plastic pipe are also used.
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