Round Extension drill rods

Parameters:

Thread： R25，R28，R32，R38,T38，T45，T51

Rod size ：D32，D39，D46，D52

Length： 600mm to 6400mm

Color:  Black or Customized

Slot for wrench: with or without

Production process:  CNC machining and advanced Heat treatment &full carburized

Features:

• Made from the same steel as Sandvik;

23CrNi3Mo, which is in same league as Sandvik Sandbar 64, is applied as drill rod material.

• Advanced production process:

produced by CNC machining and advanced heat treatment. It will connect the drill rod and the drill bit more better. 

• Full-carburization drill rod for high wear-resistance and strength.

Carburizing process is applied to promote surface hardness, thus grant better wearing quality and lifespan for the drill rods;

• Friction welding workmanship .

It makes the thread and the body integrated without broken. 

• Quality close to world famous brands, but our prices are much more competitive.
• Complete types of drill rod for various drilling scenarios.

Advanced engineering, precision manufacturing and high-grade materials assures the reliable quality of our drill rod.

Applications: Drilling duties in tunneling, construction, mining, quarrying, etc.