non-dig drill pipe rod
1.best forged drill pipe rod in china 2.best quality with good price
non-dig drill pipe rod
heat treatment :
we are the only who not only do heat treatment at the joints but also do heat treatment for the whole body of the drill pipe.Our special design heat treatment is highly valued by our climents. By heat teeatment at the whole dody, it can bear much more torque and have long life expectation.
non-dig drill pipe rod
