| 释义 |
1 ?接管 ... union nut 联管螺母，管接螺母 union pipe 接管 union reducer 渐缩管接头 ... 2 ?联接管 union pipe 联接管, 管接头; 连接管..
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Its upper end is drill pipe box or union, the nether end is casing pin. It is a crossover with hollow inside. 它是个上端为钻杆母扣或者由壬，下端为套管公扣，内空心的转换接头。 - 2
Compared with available multi-layered pipe union, the present invention has simple manufacturing process, low cost, high noise absorbing performance and high sealing effect. 它解决了已有的多层连接管件存在的制造工艺复杂、加工模具难度大、成本高、吸收噪音不理想以及连接管件与管子之间密封效果不理想的问题。 - 3
On the basis of the structure of homemade standard pipe union joint, a new handy union joint, which can be easily reassembled and no special tool applied, is designed. 在国产标准管件活接头结构的基础上，设计了一种拆装方便，不需专用工具，只要用手即可完成拆装任务的新型快速活接头。
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