AU Thread Drill Rod
Reference Price
$0.00
All rated values and recommendations are based on torque and
tension load test of an independent mechanism; depth and load
capability decrease with abrasion; actual performance may vary
with operation conditions and well drilling methods; with depth
increasing, additional torque is added to match with operation
torque; the operation torque shall not exceed the theoretical
torque.
Drilling Rod Type：
AU series drilling rod is interchangeable with Q series coring
drilling rod that is common in the international geological
exploration industry. Taper threaded connection is adopted to
facilitate connection and prevent stuck, and thread surface is
hardened to greatly prolong service life of the thread.
Pipe body: Quality alloy steel pipe is adopted and 100% test is
conducted for each raw material to ensure uniform concentricity,
straightness and heat treatment.
Thread: Taper threaded connection (3 threads per inch) is adopted
to facilitate connection and prevent thread stuck. Each thread is
under relatively even stress, providing sufficient strength for
product application.
Heat treatment: The whole undergoes heat treatment process to
improve service life of products. Threads at both ends of the
product undergo special process treatment to provide about 140%
of material strength. Service life of inner thread improves
obviously.
Thread surface hardening: after special process treatment, outer
thread surface hardness is up to about 55HRC, which effectively
avoids "sticking thread" and reduces abrasion and "stuck" due to
engagement of thread.
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