| After-sales Service: | 24/7 |
|---|---|
| Warranty: | 1 Year |
| Manufacturing Process: | CNC Milling |
| Surface Treatment: | Spray-Paint |
| Operation Pressure: | Atmospheric Pressure |
| Material: | Alloy |
| Customization: |
|---|
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Audited Supplier Discover our high-quality non-magnetic drill collar, designed for well drilling. Made with precision and durability, our API 7-1 NMDC drill collar is perfect for your drilling needs.
Keywords: Non-Magnetic Drill Collar Diameter, API 7-1 Non-Magnetic Drill Collars, 139.7mm Non-Magnetic Drill Collar, Well Drilling Drill Collars, Spiral Non-Magnetic Drill Collars, Heavier Non-Magnetic Drill Collars, API 7-1 Drill Pipe, API 7-1 NMDC Drill Collars, API 7-1 Well Drilling Drill Collars, API 7-1 NMDC Drill Pipe, NC38 Drill Pipes, API NC38 Drill Pipes, NC38 Non-Magnetic Drill Collars, API NC38 Drill Collars, API 7-1 Drill Collars for Drilling, API 7-1 Non-Magnetic Collars, API 7-1 NMDC Collars, 139.7mm Non-Magnetic Collar, API 7-1 Non-Magnetic Drill Equipments, API Non-Magnetic Drilling Collar, NM Drill Collars for Well Drilling, API 7-1 Drilling Collars, API 7-1 Non-Magnetic Spiral Collars, API 7-1 Collars for Well Drilling, API 7-1 Non-Magnetic Drill Tools.
The drill collars offered by GPE Oil Machinery Co., Ltd are 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 superior performance and durability.
With each drill collar, you will receive 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 you with the assurance of quality and reliability.
To ensure close tolerance bores, all drill collar bars are trepanned and then drifted to API specifications. This meticulous process ensures precise dimensions and optimal performance in drilling operations.
The drill collar bars feature an "as rolled" surface finish, which is the original mill finish. This finish not only enhances the appearance but also contributes to the overall durability and longevity of the drill collars.
Invest in our drill collars for exceptional drilling performance and reliability. GPE Oil Machinery Co., Ltd is committed to delivering high-quality products that meet the needs of the oil and gas industry.
| 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 | |
Suppliers with verified business licenses
Audited Supplier 
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