| Customization: | Available |
|---|---|
| After-sales Service: | 24/7 |
| Warranty: | 1 Year |
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Our API 7-1 NMDC Non-Magnetic Drill Collars are high-quality, API certified drilling equipment. Made from non-magnetic steel, these drill collars are designed for well drilling. They are spiral-shaped and available in various sizes, including NC38. Trust GPE Oil Machinery Co., Ltd as your reliable supplier of premium non-magnetic drill collars.
GPE Oil Machinery Co., Ltd offers high-quality drill collars made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars undergo full-length heat treatment and water quenching to obtain ASTM A-370 mechanical properties, ensuring exceptional durability and performance.
Our drill collars come with full mechanical and chemical mill test certifications, guaranteeing a hardness range of 285 to 341 BHN and an impact value of 40 ft.-lbs. at room temperature, one inch below the surface. These certifications provide assurance of the product's superior quality and reliability.
To ensure 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 a sleek and professional appearance.
Choose GPE Oil Machinery Co., Ltd for drill collars that meet the highest standards of performance, durability, and precision. Trust in our expertise and commitment to delivering top-notch products for your drilling needs.
| 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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