PQ BQ NQ Drill Rod Wire line Double Tube Core Barrel DCDMA Standard
Wire line Drill Rods With DCDMA standards Heat treatment control 3m
Our drill rods and casing tubes are manufactured from the highest
quality material, under stringent industry DCDMA standards, and are
field tested under a variety of conditions, in order to meet the
most rigid demands in during performances and in manufacturing
We will make sure the compositions and specifications match the
inspection report form the suppliers.
We only choose the best steel tubes in the market to manufacture
our rods and pipes. Spot check will be conducted after the steel
tubes delivered to company.
Heat treatment control:
Entire-length or ends thermal processed will greatly improve the
material strength and increase the thread wear life of the rods and
casings. We conduct either tru-wall or both ends heat treatment to
the tube body, ensuring superior wear resistance, strength, and
toughness in the most demanding applications.
Thread opening process:
Accuracy of threads will determine the use effects and life time of
drill rod and casings.
CNC latches and form cutter are used in thread opening processing
to minimize error made by anthropic factors.
Additional thread treatment:
Surface of the threads will be cleaned to remove burr adhered after
threads are opened.
Afterwards, the tread surface will be phosphated to improve surface
Size available as followings:
Wireline series: AQ, BQ, NQ, HQ, PQ
Casing: AW, BW, NW, HW, HWT, PW
Chinese Standard: S56, S59, S75, S95, S110, S130, S75A, S95A