drill pipe 

International Drilling Tools’ friction welded drill pipe is manufactured to specifications established specifically for water well requirements.
Tool joints are made from high quality steel heat treated to obtain the best physical properties in a combination of hardness, strength and ductility by exacting control during quenching and tempering operations.

Machine operations are performed in a sequence that assures close tolerance concentricity and alignment of the O.D., I.D. and threads.
Each machine operation is checked by a quality assurance technician.
The final check being made of the thread lead, pitch, taper and shoulder stand-off using frequently calibrated precision gages. Thread and shoulder surfaces are then heat-treated.
Furthermore, drill tubes must correspond to API specifications API 5CT, that means they are made of steel in S135 grade with a mechanical resistance which is 30-40% superior to the steel commonly used for manufacturing drill pipes (N80 grade).

TIn the manufacturing process the tool joints are joined to the pipe body using the friction welding process. This results in a weld with 100% penetration, free of voids and contaminates. The strength of the weld exceeds that of the pipe body.
As a result of all our choices, a lighter drill pipe is obtained: the mechanical resistance of drill tubes depends on the high quality standard of the material, not on the wall thickness! Also the tool joint material offers an increased wear resistance and higher strength in the threaded connections.