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| Product Name: |
drill collar
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| Supply Ability: |
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| Related proudcts |
drill collar, |
| Specifications |
3 1/8"-11" |
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Drill Collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drillsting in tension.
TIANHE Drill Collar has been approved by the NS-1 certification, it is manufactured from 4145H modified quenched and tempered steel, strict metallurgical specifications are followed to insure that full length heat treating produces a consistent maximum depth of hardness.
Features and Benefits
ˇńA hardness range of 285 to 341 BHN and a Charpy i***ct value of 40 ft-lbs are guaranteed at evenly distributed 16 points in any sections at room temperature;
ˇńConnections are completedŁ¨phosphate coatedŁ©to protect them from the elements after machining and to help prevent galling upon initial make-up;
ˇńThread roots are cold rolled on API and H-90 connections;
ˇńPressed steel thread protectors are supplied for all drill collar that are equipped with standard connections
When ordering Please specify;
ˇńDrill collar OD and ID;
ˇńOverall length;
ˇńConnections required (size and type);
ˇńSpecial features desired, for example:
Slick or Spiral;
Stress Relief Features;
Slip and/or Elevator Recess;
Hardbanding; |
| Company: |
Tianhe Oil Group Huifeng Petroleum Equipment Co., ltd
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| Contact: |
Lucy Zhang |
| Address: |
No. 43 West Diming Street, Mudanjiang City, Heilongjiang Province, China |
| Postcode: |
157011 |
| Tel: |
0086-453-5979984 |
| Fax: |
0086-453-6531608 |
| E-mail: |
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