该接头也许是用螺纹与套管连接在一起，或焊接在一起，以及可能还有一个法兰或卡箍连接与防喷器组或井口配接。
This adapter may be threaded or welded onto the casing, and may have a flanged or clamped connection to match the BOP stack or wellhead.
对我国有关单位今后研究、生产、使用直缝焊接套管有参考作用。
It has reference role to the researches, manufacture and the usage of straight welded casing in our nation.
外套管表面有焊接缝。
分析了真空白耗电弧炉铜-不锈钢异种金属套管式电极杆焊接裂纹产生的机理。
The mechanism of welding crack generation in the copper - stainless steel tube electrode stem of Vacuum Consumable Arc Furnace has been analyzed.
这些载荷通过立管传递到井口和套管，在连接和焊接处形成临界疲劳区。
These loads are transferred through the riser to the well - head and casing system, causing fatigue at critical connectors and welds.
并对喷嘴、规范参数、坡口形式等作了相应改进，使双套管、联箱、集气管的焊接全部实现了钨极氩弧焊打底，从而提高了双套管废热锅炉的质量。
They cause all the welding of double tubes, joint boxes and gas-collecting tubes to realize the backing weld of TAW-P. The quality of the double tube waste heat boilers have been improved.
并对喷嘴、规范参数、坡口形式等作了相应改进，使双套管、联箱、集气管的焊接全部实现了钨极氩弧焊打底，从而提高了双套管废热锅炉的质量。
They cause all the welding of double tubes, joint boxes and gas-collecting tubes to realize the backing weld of TAW-P. The quality of the double tube waste heat boilers have been improved.
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