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Non magnetic drill collar 
 
Specifications 
API 7-1 non magnetic drill collar 
P550, P530, 15-15HS 
we are factory. We can make them of model material 
keep in stock
1. Standard: ISO, API SPCE 7-1.etc 
2.Length:10'-31', others as per customer request 
3.Size: OD: 79.4mm-279.4mm, others as per request 
Drill Pipe Features:
1.Standard:ISO,API SPCE 7-1.etc
2.Length:10'-31',others as per customer request
4.Size:OD:79.4mm-279.4mm,Other Special Sizes as per your request.
5.Brand:Enkey
6.High precision in size and shape
7.Good low temperature toughness
8.Excellent comprehensive mechanical properties
9.High connection strength and sealability
10.High hardness and impact resistance
11.Good corrosion resistance,etc
12.Usage:Well Drilling


 The Petroleum drilling tools mainly include Drill collars, Spiral drill collars, Non magnetic drill collars, Short drill collars, Drill tool stabilizers, Non magnetic drill tool stabilizers, Integral heavy weight drill pipes, Kellys, etc.
♦ The details of Non magnetic Drill collar as follows,
1. Material: Non magnetic steel
2. Shape: It is the round pipe with smooth surface and thick wall, and the both ends are machined screw thread for connection.
3. Use: It is mainly used for the inspection in the process of petroleum drilling.
4. Standard: API Spec 7-1 or SY/T5144 Standard.
5. Inspection&Test: When producing, traceability are maintained from the receipt of raw material to completion of final products, and serial numbers are diestamped on each workpiece body. During each manufacturing process, inspection and test are performed.
6. Magnetic permeability (MPS=1×105/4∏A/m)
1. Average: Ur< 1.010.
2. Magnetic Field Gradient: ΔB≤0.05μT. Specification:

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