| After-sales Service: | 24/7 |
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| Warranty: | 1 Years |
| Manufacturing Process: | CNC Milling |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier GPE Oil Machinery Co., Ltd offers high-quality drilling tool hole drilling drill collars for well drilling. Our API drill collars are available in various sizes and types, including non-magnetic and slick drill collars. Choose from our wide range of options to meet your drilling needs.
The Drill Collar is an essential component of the Bottom Hole Assembly (BHA) used in drilling operations. It provides weight on the bit for efficient drilling and maintains tension in the drillstring. Our GM Drill Collar is certified by NS-1, ensuring its quality and reliability.
Manufactured from 4145H modified quenched and tempered steel, our Drill Collar adheres to strict metallurgical specifications. This guarantees a consistent maximum depth of hardness throughout the entire length. With a hardness range of 285 to 341 BHN and a Charpy impact value of 40 ft-lbs, our Drill Collar delivers exceptional performance even at room temperature.
To protect the connections from the elements and prevent galling during initial make-up, they are completed with a phosphate coating. Additionally, our API and H-90 connections have cold-rolled thread roots for enhanced durability. For convenience and added protection, all drill collars equipped with standard connections come with pressed steel thread protectors.
Suppliers with verified business licenses
Audited Supplier 
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