Specifications

Material: AISI 4145H
Usage: for swithcing and connection of drill stem in oil and gas drilling operation.

Cross-oversub acts for switching and connection of drill stem in oil and gas drilling operation.It is mainly used to  connect upper and lower drill tools in different connectors.

There are three types for cross-over sub in structure:

Type A: OD of the top end and bottom end are in same size.

Type B: OD of the top end and bottom end are in different size

Type C: Rotation of connection Thread is left-hand thread.