Tool joints welded on the drill pipe serve the oil and gas drilling operation, including pin and box joints.
All types of weld-on tool joints are in conformity with API Spec7.
The tool joints made of super alloy steel through forging and special heat treatment provides high strength, good ductility and long service life. The thread surface with copper coating or phosphate coating has excellent thread sticking resistance.
The product is granted the right to use API monogram.