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Updated by Sino Petroleum Equipment on Jan 26, 2015
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Oil Production

Solid Sucher Rob
The thread of sucker rod and coupling are processed by compressing and rolling machine, which can improve the thread strength and solve the problems of loosing and unscrewing.
Hollow Rob

Hollow sucker rod will reduce the viscosity of crude oil and control oil well paraffinication by adding all kinds of diluents, light oils, preservatives and hot oil inside through the inner hole.

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