API Non Magnetic Flex Drill Collar for Drilling Rod Nmdc

• After-sales Service: 24/7
• Warranty: 1 Year
• Manufacturing Process: CNC Milling
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Size: 2.3/8",2.7/8", 3.1/2", 4", 4.1/2", 5", 5 1/2 Inch
• Diameter: 60.32mm-139.7mm
• Transport Package: Export Packing
• Trademark: GOLDENMAN
• Origin: China
• HS Code: 8431
• Production Capacity: 150000
• Package Size: 600.00cm * 150.00cm * 150.00cm
• Package Gross Weight: 350.000kg

Product Description

Spiral API 4145h and Alloy Steel Drilling Tool Non-Magnetic Drill Collar Manufacturer

 

The drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars are full-length heat treated and water quenched to obtain ASTM A-370 mechanical properties. Full mechanical and chemical mill test certifications are supplied with all drill collars. These mill test certifications guarantee a hardness range of 285 to 341 BHN and an impact value of 40 ft.-lbs. at room temperature one inch below the surface.
To ensure close tolerance bores, all drill collar bars are trepanned then drifted to API specifications. Bar surface finish is "as rolled" which is original mill finish.


 

 

 

Connections	ODmm	IDmm	Lengthmm
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	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	76.2	9150 or 9450
8 5/8REG	279.4	76.2	9150 or 9450