| Customization: | Available |
|---|---|
| After-sales Service: | 24/7 |
| Warranty: | 1 Year |
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API Non-Magnetic Drill Collar API 7-1 NMDC by GPE Oil Machinery Co., Ltd. A reliable choice for well drilling equipment. These non-magnetic drill collars are designed to meet API 7-1 standards. Perfect for drilling operations that require non-magnetic properties.
Introducing the high-quality drill collars by GPE Oil Machinery Co., Ltd. These drill collar bars are made of modified AISI 4145H chromium molybdenum alloy steel, ensuring exceptional durability and performance.
Our drill collars undergo a full-length heat treatment and water quenching process to obtain ASTM A-370 mechanical properties, guaranteeing superior strength and reliability. To further ensure quality, we provide full mechanical and chemical mill test certifications with every drill collar, giving you peace of mind.
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.
For precise and accurate drilling, all drill collar bars are trepanned and drifted to API specifications, ensuring close tolerance bores. The bar surface finish is "as rolled," maintaining the original mill finish for optimal performance.
Choose GPE Oil Machinery Co., Ltd for reliable and high-performing drill collars that meet your drilling needs. Trust in our expertise and quality assurance to enhance your drilling operations.
| 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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