Drill String Cross-over Sub

Date: 25 Dec 2009

Drill String Cross-over Sub is a component(sub)of conversion to connect drill string in drilling practices.
The sub is made of forged billet and treated by whole-section quenching and tempering. Detected by whole-section ultrasonography, its mechanical performance runs up to:
Divided into seven Types by Application

Contact information:
Bohai Pipeline CO. LTD
Dongying Hekou district Zuanjing street 22.[257200]
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