@lyy150a1
Active 4 years, 4 months ago
Product application
鈼?Function of Polish Rod
Polish rod is a kind of special sucker rod connected with sucker rod and beam hanger. It is at the top of sucker rod, need to bear the most strength,so with bigger diameter and higher steel grade than sucker rod, and the surface is very smooth.
鈼?Main function
1. Combined with packing set in pac […] View
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