This paper introduces the rehabilitation procedure of PE lined pipeline and stresses on quality control requirement of PE pipe heat melting welding.

文章介绍了内衬PE管修复技术的施工程序，强调了PE管道热熔焊接质量控制要求。

youdao

Teflon - lined pipe, casing, elbow, the three exchanges or four, size head, cylinder, air compressor - oxygen - ring, gasket seal ring and auto parts.

聚四氟乙烯内衬直管， 套管，弯头，三通，四通，大小头，筒体，空压机-制氧机- 活塞环、密封圈和汽配封圈。

youdao

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。

youdao