焊接熔观察孔针(3)设置在管件本体上，方便检测焊接进程，控制焊接质量。
The molten observation hole needle (3) is arranged on the pipe fitting body so that a welding progress can be conveniently detected, and the welding quality can be controlled.
如果焊接与所选的焊接进程有偏差，在画面上会有指示标志将那些点标示出来，这样操作人员就可以在焊接完成后对其进行评估。
If the selected welding process, welding and there are deviations on the screen there will be signs marking out those points, so that the welding operator can be evaluated after the completion.
如果焊接与所选的焊接进程有偏差，在画面上会有指示标志将那些点标示出来，这样操作人员就可以在焊接完成后对其进行评估。
If the selected welding process, welding and there are deviations on the screen there will be signs marking out those points, so that the welding operator can be evaluated after the completion.
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