| Customization: | Available |
|---|---|
| After-sales Service: | 24/7 |
| Warranty: | 1 Year |
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Discover our high-quality non-magnetic drill pipe for well drilling. Our API 7-1 NMDC drill collars are designed to resist magnetic interference, ensuring efficient and reliable drilling operations. Trust GPE Oil Machinery Co., Ltd for all your drilling equipment needs.
Introducing the high-quality drill collars from GPE Oil Machinery Co., Ltd. Made of modified AISI 4145H chromium molybdenum alloy steel, these drill collar bars are designed to deliver exceptional performance in drilling operations.
Our drill collar bars undergo a full-length heat treatment process and are water quenched to obtain ASTM A-370 mechanical properties. Rest assured, all drill collars come with comprehensive mechanical and chemical mill test certifications, ensuring their top-notch quality.
With a hardness range of 285 to 341 BHN and an impact value of 40 ft.-lbs. at room temperature one inch below the surface, our drill collars are built to withstand the toughest drilling conditions.
To guarantee close tolerance bores, all drill collar bars are trepanned and drifted to API specifications. The bar surface finish is "as rolled," maintaining the original mill finish for enhanced durability.
Invest in our drill collars and experience superior drilling performance. Trust GPE Oil Machinery Co., Ltd for reliable and high-quality oil drilling equipment.
| Connections | ODmm | IDmm | Lengthmm | |
| NC23-31 | 79.4 | 31.8 | 9150 | |
| NC26-35 | 88.9 | 38.1 | 9150 | |
| NC31-41 | 104.8 | 50.8 | 9150 or 9450 | |
| NC35-47 | 120.7 | 50.8 | 915 or 9450 | |
| NC38-50 | 127 | 57.2 | 9150 or 9450 | |
| NC44-60 | 152.4 | 57.2 | 9150 or 9450 | |
| NC44-60 | 152.4 | 71.4 | 9150 or 9450 | |
| NC44-62 | 158.8 | 57.2 | 9150 or 9450 | |
| NC46-62 | 158.8 | 71.4 | 9150 or 9450 | |
| NC46-65 | 165.1 | 57.2 | 9150 or 9450 | |
| NC46-65 | 165.1 | 71.4 | 9150 or 9450 | |
| NC46-67 | 171.4 | 57.2 | 9150 or 9450 | |
| NC50-67 | 171.4 | 71.4 | 9150 or 9450 | |
| NC50-70 | 177.8 | 57.2 | 9150 or 9450 | |
| NC50-70 | 177.8 | 71.4 | 9150 or 9450 | |
| NC50-72 | 184.2 | 71.4 | 9150 or 9450 | |
| NC56-77 | 196.8 | 71.4 | 9150 or 9450 | |
| NC56-80 | 203.2 | 71.4 | 9150 or 9450 | |
| 6 5/8REG | 209.6 | 71.4 | 9150 or 9450 | |
| NC61-90 | 228.6 | 71.4 | 9150 or 9450 | |
| 7 5/8REG | 241.3 | 76.2 | 9150 or 9450 | |
| NC70-97 | 247.6 | 76.2 | 9150 or 9450 | |
| NC70-100 | 254 | 76.2 | 9150 or 9450 | |
| 8 5/8REG | 279.4 | 76.2 | 9150 or 9450 | |
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