Oil well drill collar

Price: 300.0~500.0 USD
Trade Term: FOB
Payment Terms: T/T,L/C
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Basic Info.
  • Spec.: API 7 
  • Material: AISI 4145H 
  • Usage: Oil well drilling tools 
  • Type: Spiral 
  • Connection: IF 
  • OD: 11" 
  • Model No.: TOP-Drill collar-01 
  • Place of Origin: Shaanxi  
  • Min.Order: 1 Piece/Pieces
  • Means of Transport: Ocean
Supply Capacity
  • Production Capacity: 500 joint/month
  • Packing:sea shipment
  • Delivery Date: 30 days
The spiral drill collar

Model
TOP-Drill collar-01
Spec.
API 7
Material
AISI 4145H
Usage
Oil well drilling tools
Type
Spiral
Connection
IF
OD
11"

The spiral drill collar is added to a drill collar to prevent the likelihood of differential wall-sticking by reducing wall contact between the drill collar and the wall of the hole. The box end of the spiral collar is left uncut from 79 inches from box shoulder and the pin end is left uncut 30 inches from the pin shoulder.
API relief groove pin and bore back box stress relief are available on request.
Thread roots are cold-worked to offer a greater resistance to fatigue.
All connections are phosphated to minimize galling during makeup and applied with thread storage compound.
Thread protectors are installed to ensure adequate joint protection during shipment.

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Ms. Elaine
Tel: 86-29-81779342
Mobile: 13629207466
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XI'AN ZZ TOP OIL TOOLS CO.,LTD
RM22808,SHANGPIN INTERNATIONAL,NO.88GAOXIN ROAD,HI-TECH ZONE, Xi'an, Shaanxi, China (Mainland)
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