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1 | | | sucker rod bolt, sucker rod clamp, polished rod clamp
Specification: API 11B sucker rod clamp, polished rod clamp,clamp polished rod
Detail: The polished rod clamp is of hinge-jointed butterfly structure, it is fixed on the polished rod as retaining device for the rope hanger. It makes the pumping unit horsehead connected with polished rod through rope hanging devi...
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