Series

Description

Specification

Drill-stem Subs and Short Joints

Side entry subs

3-1/2″～11-1/4″

Increment Circulating Subs

3-1/2″～11-1/4″

Drill-stem subs

In all size

Float Valve Subs

4-3/4″～8″

Tool Joints

In all size

Kelly Saver Subs

4-3/4″～8″

Saver Subs with Rubber

4-3/4″～8″

Premium Connection Subs

Integral Pup Joints

In all size

Integral Short DC

In all size