Shanxi Weigao Petroleum Drilling Tools Co., Ltd,
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Drill Stem Sub

Drill Stem Sub

Drill Stem Sub

Detailed Selling Lead Description
Drill Stem Sub
Drill stem sub is made from AISI4145H chrome-molybdenum alloy steel, the content of microelement is effectively controlled, the surface of connector thread has been phosphatized or copperized.
There are three types according to the shapes and functions:
 a  (Same Diameter): one sub has only one OD size
  b  (Different Diameters): one sub has two OD sizes
  c  (left Hand): sub’s connecting thread is left-handed
 
Function: Connecting and switching different drilling tools.
Features:The different size drill subs with standard SY5200-93 《Drill-stem Sub》and API Spec7 are available.
All products have been checked through ultrasonic non-damage inspection and the surface of connector thread has been copper coated, we can produce various specifications of Drill-stem Sub according to client’s request.
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