Drilling Tools Non-Magnetic Steel Drill Collars

• Customization: Available
• After-sales Service: Timely After-Sale Assistance
• Warranty: 12 Month
• Model NO.: According to the custom
• Manufacturing Process: CNC Milling
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Stainless Steel
• Use: Oil/Gas Industry Drillilng
• Certificate: API
• Video Outgoing-Inspection: Provided
• Transport Package: Iron Frame Packaging
• Specification: According to the custom
• Trademark: East heavy
• Origin: China
• HS Code: 84314300

Product Description

Product Description

 

The non-magnetic drill collar is made of low-carbon stainless steel independently developed by our company and follows API and SY/T5144 standards. The threads can be processed with cold rolling. Our company can machine double-shoulder threads and other specifications of special threads.

 










 

Product Parameters

 

Non-magnetic drill collars specification

 

OD		ID		mm Length	Df mm	Bending strength ration
mm	in	mm	in
NC23-31	79.4	31/8	31.8	11/4	9150	76.2	2.57:1
NC26-35	88.9	31/2	38.1	11/2	9150	82.9	2.42:1
NC31-41	104.8	41/8	50.8	2	9150 or 9450	100.4	2.43:1
NC35-47	120.7	43/4	50.8	2	9150 or 9450	114.7	2.58:1
NC38-50	127.0	5	57.2	21/4	9150 or 9450	121.0	2.38:1
NC44-60	152.4	6	57.2	21/4	9150 or 9450	144.5	2.49:1
NC44-60	152.4	6	71.4	213/16	9150 or 9450	144.5	2.84:1
NC44-62	158.8	61/4	57.2	21/4	9150 or 9450	149.2	2.91:1
NC46-62	158.8	61/4	71.4	213/16	9150 or 9450	150.0	2.63:1
NC46-65	165.1	61/2	57.2	21/4	9150 or 9450	154.8	2.76:1
NC46-65	165.1	61/2	71.4	213/16	9150 or 9450	154.8	3.05:1
NC46-67	171.4	63/4	57.2	21/4	9150 or 9450	159.5	3.18:1
NC50-67	171.4	63/4	71.4	213/16	9150 or 9450	159.5	2.37:1
NC50-70	177.8	7	57.2	21/4	9150 or 9450	164.7	2.54:1
NC50-70	177.8	7	71.4	213/16	9150 or 9450	164.7	2.73:1
NC50-72	184.2	71/4	71.4	213/16	9150 or 9450	169.5	3.12:1
NC56-77	196.8	73/4	71.4	213/16	9150 or 9450	185.3	2.70:1
NC56-80	203.2	8	71.4	213/16	9150 or 9450	190.1	3.02:1
65/8REG	208.6	81/4	71.4	213/16	9150 or 9450	195.7	2.93:1
NC61-90	228.6	9	71.4	213/16	9150 or 9450	212.7	3.17:1
75/8REG	241.3	91/2	76.2	3	9150 or 9450	223.8	2.81:1
NC70-97	247.6	93/4	76.2	3	9150 or 9450	232.6	2.57:1
NC70-100	254.0	10	76.2	3	9150 or 9450	237.3	2.81:1
85/8REG	279.4	11	76.2	3	9150 or 9450	266.7	2.84:1

Principal tolerance dimension

OD		OD	ID	Length	Chamfer DF Bendingstrengthratio
mm	in
≤88.9	≤31/2	+1.20	+1.60	+152.4	±0.4
>88.9∽114.3	>31/2∽41/2	+1.60
>114.3∽139.7	>41/2∽51/2	+2.00
>139.7∽165.1	>51/2∽61/2	+3.20
>165.1∽215.9	>61/2∽81/2	+4.00
>215.9∽241.3	>81/2∽91/2	+4.80
>241.3	>91/2	+6.40

Mechanical property

OD		Yieldstrength		Tensilestrength		Elongation	Shrinkage	Hardnes	Impact Akv
mm	in	Ksi	Mpa	Ksi	Mpa	%	%	HB	J
≤180	≤7	≥120	≥828	≥135	≥931	≥25	≥50	285-360	≥75
>180	>7	≥110	≥759	≥130	≥897	≥25	≥50	285-360	≥75

 

Magnetic property

(Magnetic field=1×10⁵/4π A/m)

1.Relative permeability μr<1.010

2.Magnetic field gradient :ΔB≤0.05μT
 

Company Profile

 

Jiyuan City East Heavy Industry Co., Ltd. is a new hi-tech enterprise that produces " East Heavy Industry" brand oil drilling and production equipment and geological exploration tools. It is located in Jiyuan City of Henan Province on the shore of the famous Xiaolangdi Hydro Complex. The Company covers a land area of over 30,000 square meters, possesses 100 million yuan of assets, and has established a good cooperative development relationship with authoritative units such as University of Petroleum, Taiyuan University of Technology, Xi'an Petroleum Pipe Research Institute, etc., providing strong technical force for product development.
 

 

The Company possesses a complete set of petroleum drilling tool production lines and mainly produces large deep-hole boring machines, ordinary lathes, CNC lathes, mill, printer, etc. The Company has established a dedicated testing center that is equipped with domestic and overseas advanced precision testing equipment and sound testing means to control the whole process of products and strictly abides by API 7-1, API 7-2, SY/T5144 and SY/T5146 standards to ensure that all performance indexes of the Company's products can meet international standards and standards of American Petroleum Institute (API). The Company has passed IS09001 quality management system certification and HSE management system certification and has obtained the right to use the logos of API petroleum drilling tools. Main drilling tools include non-magnetic drill collar, non-magnetic pressure drill pipe, ordinary drill collar, integrated heavy weight drill pipe, adapter, etc. The annual production capacity is 10,000 pieces. The Company can also machine products according to special requirements of users.

"Honest Based, Innovative Management, Keeping Improving and Pursuing Excellence" has always been the guideline of our company. We will perform extensive economic cooperation and technical exchange with friends in all walks of life at home and abroad relying on our high business reputation, strong capital force and technical strength, striving to develop and manufacture drilling and production equipment jointly and create a bright future. 


 

Certifications