 |
| Place of Origin: | China |
| Brand Name: | SHITAN |
| Certification: | API |
| Model Number: | O. D. 203.2mm-NC56 |
| Minimum Order Quantity: | 1 PC |
|---|---|
| Price: | USD100 |
| Packaging Details: | Bundles |
| Delivery Time: | 5 working days |
| Material: | P550 | O.D.: | 203.2mm |
|---|---|---|---|
| Thread: | Nc56 | Feature: | Non-magnetic |
| Standard: | API Spec 7-1 |
Non-Magnetic Drill Collar are made of low magnetic stainless alloy steel by combining a proprietary chemical analysis and a hammer forging process. The material is resistant to stress corrosion cracking. With high mechanical properties, low magnetic permeability, excellent machineability and no tendency to galling. Production standard: API Spec 7-1 and API Spec 7-2.
The parameter of Non-Magnetic Drill Collar according to API Spec 7-1 specifications.
| Drill Collar Thread | Outside Diameter D | Inside Diameter d | Length | Chamfer Diameter | Reference Bending Strength Ratio | ||
| L | Df | ||||||
| mm | in | mm | in | mm | mm | ||
| NC31-41(27/8IF) | 104.8 | 4 1/8 | 50.8 | 2 | 9140or9450 | 100.4 | 2.43:1 |
| NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 9140or9450 | 114.7 | 2.58:1 |
| NC38-50(31/2IF) | 127 | 5 | 57.2 | 2 1/4 | 9140or9450 | 121 | 2.38:1 |
| NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9140or9450 | 144.5 | 2.49:1 |
| NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9140or9450 | 144.5 | 2.84:1 |
| NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9140or9450 | 149.2 | 2.91:1 |
| NC46-62(4IF) | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9140or9450 | 150 | 2.63:1 |
| NC46-65(4IF) | 165.1 | 6 2/4 | 57.2 | 2 1/4 | 9140or9450 | 154.8 | 2.76:1 |
| NC46-65(4IF) | 165.1 | 6 2/4 | 71.4 | 2 13/16 | 9140or9450 | 154.8 | 3.05:1 |
| NC46-67(4IF) | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9140or9450 | 159.5 | 3.18:1 |
| NC50-67(41/2IF) | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9140or9450 | 159.5 | 2.37:1 |
| NC50-70(41/2IF) | 177.8 | 7 | 57.2 | 2 1/4 | 9140or9450 | 164.7 | 2.54:1 |
| NC50-70(41/2IF) | 177.8 | 7 | 71.4 | 2 13/16 | 9140or9450 | 164.7 | 2.73:1 |
| NC50-72(41/2IF) | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9140or9450 | 169.5 | 3.12:1 |
| NC56-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 | 9140or9450 | 185.3 | 2.70:1 |
| NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9140or9450 | 190.1 | 3.02:1 |
| 6 5/8REG | 209.6 | 8 1/4 | 71.4 | 2 13/16 | 9140or9450 | 195.7 | 2.93:1 |
| NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9140or9450 | 212.7 | 3.17:1 |
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