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。
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。
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。
This article Outlines the features, application and applicable standards at home and abroad of casing pipe union, etc.
综合概述了套接式管接头的特点、应用、国内外标准等。
It is indispensable to install a suitable pipe union in the pipeline, in proximity to the burner, to allow for easy disassembly of the burner and opening of the boiler door.
为了便于燃烧器拆卸和打开锅炉门，在接近燃烧器的管子的地方装上合适的活接是必不可少的。
The present invention discloses a sealing union, which comprises a union of pipe fittings with groove and two sealing rings.
本发明公开了一种密封内接头，所述一种密封内接头包括一个有槽管件内接头和二个密封圈。
The utility model is composed of a bottle stopper perforator, a triplet with plus drug, a drip kettle, a control clamp, a reducer union, scalp acupuncture, a thick and a fine conduit pipe.
它由瓶塞穿孔器、加药三通、滴壶、控制夹、变径接头、头皮针和粗、细导管等构成。
The utility model is composed of a bottle stopper perforator, a triplet with plus drug, a drip kettle, a control clamp, a reducer union, scalp acupuncture, a thick and a fine conduit pipe.
它由瓶塞穿孔器、加药三通、滴壶、控制夹、变径接头、头皮针和粗、细导管等构成。
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