After the coating solidifying, the pipe test should be done with defect detector under the specified voltage.
待涂层固化当前，要应用缺陷检测器在涂料技术标准中规定的电压下对钢管进行检测。
The final inspection of the coating, before the pipe is put into trench, being carried out by a holiday detector which applies a high voltage current across the coating.
在管子放入管沟前，利用覆盖层检查仪对管道覆盖层进行最后的检查，它在覆盖层的两侧施加高压电。
The article refers to the oil pipe two - dimension leak - magnetic detector firstly.
本文首先给出石油专用管二维漏磁高速探伤机的工作原理。
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