Throttle coil weld technology of Yuhuan 1000MW ultra supercritical boiler is solved by technology test and development of new weld technology.

介绍我国首台百万等级超超临界锅炉节流管圈的焊接难点，通过工艺试验，开发了新的焊接工艺，解决了该技术难题。

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Describes difficulties in bent manufacturing, coil welding and weld nondestructive detection, and safety influence on oil and gas production on well sites.

本文叙述了水套炉中，传统蛇形气盘管在盘管弯头制作、盘管焊接、盘管焊缝无损探伤的困难，及其对采油采气井场安全的影响。

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Then use the coil ring machine rolled into a circle, with the electrode to weld the interface firmly, welding mouth to carry out X spectroscopy.

然后用卷环机卷制成圆圈，用焊条把接口处焊接牢固，焊口处要进行X光谱检验。

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