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OCTG & Drill Stems
- Non-magnetic drill tools
- Update Time | 2020-01-21 14:30:08
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As you drill in areas closer to the earth’s magnetic poles, it is essential to use a non-magnetic drill collar. Our non-magnetic drill collars offer strength and hardness while neutralizing magnetic inference. Compatible with standard drill string tools and stabilizers, our non-magnetic drill collars are manufactured according to API Spec 7-1.
Products offered:
Non-Magnetic Drill Collars
Non-Magnetic Flex Drill Collars
Non-Magnetic Spiral Drill Collars
Non-Magnetic Subs.
Our Non-Magnetic Steel has three grades:
NM530 (consistent with P530),
NM550 (consistent with P550/ 15-15HS),
NM650 (consistent with P650).
Steel OD Range Yield Strength Rt Tensile Strength Rm Elongation Impact Value Hardness Brinell Grade in Mpa ksi Mpa ksi A(%) Akv/L (HB) NM530 3 1/8 through 6 7/8 ≥827 ≥120 ≥827 ≥120 ≥25 ≥150 285-360 7 through 9 1/2 ≥758 ≥110 NM550 3 1/8 through 6 7/8 ≥965 ≥140 ≥1034 ≥150 ≥25 ≥150 285-360 7 through 9 1/2 ≥827 ≥120 NM650 3 1/8 through 6 7/8 ≥965 ≥140 ≥1034 ≥150 ≥20 ≥90 330-400 7 through 9 1/2 ≥896 ≥130 Test and Inspection carried out on each bar: Chemical Composition, Tensile Test, Impact Test, Hardness Test, Metallographic Test (Grain Size), Corrosion Test (According to ASTM A 262 Practice E), Ultrasonic Test over the whole length of the bar (According to ASTM A 388),Relative maganetic permeability Test, Hot spot Test, Dimensional Inspection.