Henan Shenlong Petroleum Drilling Tools Co.,Ltd

Drill string
Non Magnetic Drill Collar
Non Magnetic Stabilizer
Non Magnetic MWD Parts
Integral Blade Stabilizer
Drill Collar
Heavy Weight Drill Pipe
Drill Stem Subs
Metallurgical spare
MPM mandrel

  product >> Drill Collar

 Shenlong's Drill Collars are manufactured from AISI 4145H alloy steel. Drill collars are bored and drifted to API Spec 7-1 and fully heated to meet or exceed the mechanical property  requirements of API Spec 7-1. Hardness range of 285-341HB and a charpy "V" notch impact value of 54 joules are guaranteed one inch below the surface.
On enquiries and orders,please specify:
    Slick or Spiral;
    Drill Collar OD;
    Drill Collar ID;
    Length of Drill Collar;
    Connection Type.



























































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Non-magnetic Drill collar      Drill collar

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