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Jiyuan City East Heavy Industry Co.,Ltd
 
 
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Spiral drill collar 

  产品分类 : 冶金礦產->鋼鐵類->鉬

     
Spiral drill collar
 
 
         

  产品规格
 
  Country  CN
  Brand  DFZG
  Minimum Order  1 piece
  Payment Term  L/C T/T Westen union paypal

 

  产品描述
   
  The details of Spiral drill collar as follows,
1. Material: AISI 4145H Alloy steel,
2. Shape: It is a kind of drill collar which adds three dextrogyrate spiral groove on the outer circle
of ordinary drill collar when processing, and the purpose is to reduce the area of contact and friction
with the well wall, which can effectively prevent the pressure sticking.
3. Use: It is mainly used between the drill head and the drill pipe, so that it can make the drill head
work reposefully and keep right trace by providing the pressure and weight for drill head.
4. Standard: API Spec 7-1 or SY/T5144 Standard.
5. Inspection&Test: When producing, traceability are maintained from the receipt of raw material to
completion of final products, and serial numbers are die-stamped on each workpiece body. During
each manufacturing process, inspection and test are performed.

   


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