| Place of Origin | Shandong, China |
| Brand Name | Nera |
| Type | Drill Collar |
| Machine Type | Drilling Tool |
| Certification | API |
| Material | Carbon Steel |
| Processing Type | Casting |
| Use | Well Drilling |
Non-magnetic drill collar
Materials of the Non-magnetic drill collar are from chrome manganese, low carbon obtained by combining a proprietary chemical analysis and a rotary hammer process. The material is resistant to stress corrosion cracking, with high machine ability and no tendency to galling.
Mechanical Property | |||||
O.D. | Yield strength Rt | Tensile strength Rm | Elongation 4(%) | HB | |
mm | In | ||||
79.4~171.4 | 3 1/8--6 3/4 | >758 | >827 | >18 | 285~360 |
177.8~279.4 | 7--11 | >689 | >758 | >20 | |
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