Drill Collar with API Carbon Steel Drill Rigs for Oil Rigs Special Drill Collar

• Customization: Available
• Warranty: 1 Year
• Manufacturing Process: Forging
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: P550
• Certificate: API
• Transport Package: Iron Frame Packaging
• Specification: According to the custom
• Trademark: East heavy
• Origin: Henan China
• HS Code: 8431431000

Product Description

Product Description

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. 

Detailed Photos

Product Parameters

 

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

Certifications

Lead time

Quantity (pieces)	1 - 1	> 1
Lead time (days)	20	To be negotiated

Customization

Customized logo

Min. order: 1 piece

Customized packaging

Min. order: 1 piece

Graphic customization

Min. order: 1 piece

For more customization details, message supplier

 

After Sales Service

After-sale Warranty

(1) Free change once the problem caused by the quality issue.
(2) Timely after-sale assistance shall be provided all the time.
 

FAQ

Q: Are you original manufacturer or trading company?

A: We are an integrated corporation specialized in manufacturing and exporting.

Q: Can you supply related drilling tools?
A: Yes, we can supply full set of drilling tools, such as drill pipe, tricone bit, PDC bit, drag bit, DTH Hammer. Moreover, we
have drilling equipments like rigs, mud pump, air compressor, etc. as well.

Q: Which payment terms can you accept?
A: Normally we prefer 30% advance payment after purchase order by T/T, 70% remaining payment before shipping by T/T. And 100% advance payment after purchase order by T/T for small orders.

Q: How is your delivery time?
A: This will depend on your purchasing quantity. Normally we can deliver 10-15 days.

Q: How can you ensure the quality?
A: We have our professional QC and all the products will be strict inspection and testing for every order before shipping out.