As the professional manufacture of
non-excavation drilling tools, we can produce and modify all
specification of non-excavation drill pipes, non-excavation special
non-magnetic short bent collar and direction sub, such as, products
with specifications of 3M, 4.5M, 6M,?*3,?*9,
and so on. Besides, we can produce non-excavation direction drill
bit (slick and non-magnetic) and other non-excavation special
drills.
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