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Drill pipe is an essential component used in drilling operations, primarily in the oil and gas industry for extracting hydrocarbons from underground reservoirs. It is a long, hollow steel tube that connects the drilling rig above ground to the drill bit below ground, allowing drilling fluids to circulate through it.

1. **Material**: Drill pipes are made from high-grade steel, usually alloyed with chromium and molybdenum to increase their strength and resistance to wear and corrosion.

2. **Thread Design**: The ends of drill pipes have specially designed threads called "api connection" or other proprietary types like H-40, PDC, etc., which allow them to connect securely to the drilling assembly.

3. **Diameter and Length**: Drill pipes come in various diameters and lengths depending on the drilling application and the type of rig being used. Typical diameters range from 2 inches (50 mm) to 6 inches (152 mm), and lengths can vary from 30 feet (9 meters) to 100 feet (30 meters).
4. **Stiffness and Flexibility**: Drill pipes must be stiff enough to withstand the pressure of drilling fluids but flexible enough to handle the dynamic forces encountered during drilling, such as torque and shock loads.
5. **Internal and External Features**: Drill pipes may have internal features like internal threads or internal cooling passages to facilitate the circulation of drilling fluids. They also often have external features like grooves, fins, or ribs to improve handling and reduce friction.

6. **Quality Assurance**: Drill pipes undergo rigorous testing and inspection to ensure they meet safety and performance standards before they are deployed in drilling operations.

Drill pipe specifications
Designations					Pipe body OD.	Pipe wall thickness	Tool joint OD.	Tool joint PIN ID.	Approx mass
Lable 1	Lable 2	Grade	Upset type	RSC type	mm	mm	mm	mm	kg/m
Internal-upset
4	14.00	E	IU	NC40	101.60	8.38	133.4	71.4	22.42
4	14.00	G	IU	NC40	101.60	8.38	139.7	61.9	22.76
4-1/2	13.75	E	IU	NC40	114.3	6.88	152.4	85.7	22.5
3-1/2	15.5	G	EU	NC38	88.9	11.4	120.7	54.0	25.38
2-3/8	6.65	E	EU	NC26	60.32	7.11	85.7	44.5	10.45
2-7/8	10.40	S	EU	NC31	73.02	9.19	111.1	41.3	17.19
We can supply full size drill pipe with API 5D/5DP, including IU, EU, IEU. Please leave a message for consultation.

Drill collar specifications
Nominal Size	OD		ID		Length	Bevel Dia. mm	Bending Strength Ratio
Nominal Size	mm	in	mm	in	mm	Bevel Dia. mm	Bending Strength Ratio
NC31-41(2-7/8IF)	104.8	4-1/8	50.8	2	9150	100.4	2.43:1
NC35-47	120.7	4-3/4	50.8	2	9150	114.7	2.58:1
NC38-50(3-1/2IF)	127	5	57.2	2-1/4	9150	121	2.38:1
NC44-60	152.4	6	71.4	2-13/16	9150/9450	144.5	2.84:1
NC44-62	158.8	6-1/4	57.2	2-1/4	9150/9450	149.2	2.91:1
NC46-62(4IF)	158.8	158.8	71.4	2-13/16	9150/9450	150	2.63:1
NC50-70(4-1/2IF)	177.8	7	57.2	2-1/4	9150/9450	164.7	2.54:1
NC56-77	196.8	7-3/4	71.4	2-13/16	9150/9450	185.3	2.70:1
6-5/8REG	209.6	8-1/4	71.4	2-13/16	9150/9450	195.7	2.93:1
NC61-90	228.6	9	71.4	2-13/16	9150/9450	212.7	3.17:1
We can supply full size drill collar with API 5D/5DP, Please leave a message for consultation.

Heavy weight drill pipe specifications
Nominal size	Pipe body		Tool Joint			Single weight Bec
Nominal size	OD.	ID.	RSC type	OD.	ID.	kg/pcs
3-1/2	3-1/2	2-1/4	NC38	4-3/4 4-7/8	2-1/4	319
4	4	2-1/2 2-1/16	NC40	5-1/4	2-1/2 2-9/16	434 423
4-1/2	4-1/2	2-3/4	NC46	6-1/4	2-3/4	578
5	5	3	NC50	6-5/8	3	702
5-1/2	5-1/2	3-1/4	5-1/2FH	7	3-1/4	842
6-5/8	5-1/2	4-1/2	6-5/8FH	8-1/4	4-1/2	1084
We can supply full size drill pipe with API 5D/5DP, Please leave a message for consultation.

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Henan Dongfanglong Trade Co.,Ltd

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1 min

Main Product: Tubing&Casing Coupling, API 5CT PUP Joint, X-over Crossover, Down Hole Tools, Sucker Rod Couplings, Machinery Parts Processing Services

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