Non-magnetic Drill Collar

Model:	Φ127
Brand:	WEIGAO
Origin:	Made In China
Category:	Metallurgy , Mining & Energy / Metallurgy & Mining / Metal Mineral
Label:	non-magnetic drill , drill collar , drill collar factory
Price:	US $10000 / pc
Min. Order:	1 pc

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Product Description

It is made from high-class low carbon stainless steel, and completely meets the requirement of API Spec 7-1 and SY/T5144 Standard. It has good low magnetic permeability, high mechanical property and perfect enduring intergranular corrosion cracking performance. It is mainly used for the inspection in the process of petroleum drilling, and the structure is the same with the ordinary drill collar.

Magnetic permeability(MPS=1×105/4∏A/m)

1. Average: Ur<1.010

2. Magnetic Field Gradient: ΔB≤0.05μT

Specification:

Connections	OD mm	ID mm	Length mm
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	127.0	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	254.0	76.2	9150 or 9450
8 5/8REG	279.4	76.2	9150 or 9450

Mechanical properties:

OD		Yield Strength σ0.2 MPa	Tensile Strength σb MPa	Elongation δ4 %
mm	in	Yield Strength σ0.2 MPa	Tensile Strength σb MPa	Elongation δ4 %
79.4-171.4	3 1/8-6 3/4	≥758	≥827	≥18
177.8-279.4	7-11	≥689	≥758	≥20