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为了判别达到服役期限的抽油杆能否继续下井使用，需对其进行技术检测。在使用电涡流探头检测抽油杆表面裂纹之前，利用链传动生产线及钢刷打光装置来完成对抽油杆表面去污、打光等处理。
In order to determine whether the service life of the sucker rod can go down to use, the need for technical testing. In the use of eddy current probe to detect surface crack sucker rod, the use of chain drive production line and steel brush lighting device to complete the sucker rod surface decontamination, lighting and other treatment.