This paper introduces a new cementing tool named circulating blind pipe, and it's mechanical structure, operation principle and successful applications while cementing a liner in a lost well.
详细介绍了一种新型固井用井下工具——可循环盲板的结构、工作原理及其在漏失井筛管固井中的成功应用。
The invention provides a sealing structure for pipe joints, which belongs to the mechanical technical field.
本发明提供了一种管件接头的密封结构，属于机械技术领域。
Mechanical structure parts, vent-pipe of engine, combustion engine of boiler, burner.
机械构造用件，发动机排气管，锅炉燃烧室，燃烧器。
Mechanical structure parts, vent-pipe of engine, combustion engine of boiler, burner.
机械构造用件，发动机排气管，锅炉燃烧室，燃烧器。
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