Diameter of Casing pipe: 4 1/2 "-20", tube：2 3/8 "-5"

Strength grade: API E75-S135 and other materials.

Length range：R1:18-22ft,R II : (27-30ft); R III: (38-45ft)

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Product Detail

Shanghai Metal Corporation is a leading API Oil Drilling Pipe manufacturer and supplier.

The API Oil Digging Pipe is mainly used in oil, all-natural gas, coal bed methane, water digging up design, and various other markets. Drill pipes are divided into three categories: square drill pipes, drill pipes and weighted drill pipes. The order of connection is square drill pipe (1 piece) + drill pipe (n pieces, determined by the depth of the well) + weighted drill pipe (n pieces, determined by the design of the combination of drilling tools). Drill pipe is the basic component of the drilling column. Its main role is to transmit torque and transport drilling fluid, and rely on the gradual lengthening of the drill pipe to make the borehole deeper and deeper. Therefore, drill pipe occupies a very important position in oil drilling.

In the corrosive environment, the casing itself is also required to have corrosion resistance. Drill pipe is a steel tube with threads on the end that is used to connect the surface equipment of a drilling rig to the drill milling equipment or bottom hole device located at the bottom end of the drilled well. The purpose of drill pipe is to transport drilling mud to the drill bit and to raise, lower or rotate the bottom hole device with the drill bit. Drill pipe must be able to withstand great internal and external pressure, twisting, bending and vibration. Drill pipe can be used multiple times during the extraction and refining of oil and gas.

If you want to know more about our steel pipe products or API Oil Drilling Pipe price please feel free to contact us, we will reply you within 24 hours.

Oil digging pipe length range are R1, R2, R3. According to the American Petroleum Institute (American Petroleum Institute) (API for short), drill pipe is divided into three categories according to its length (L): Category I: 5.486-6.706m (18-22ft); Category II (commonly used): 8.230-9.144m (27-30ft); Category III: 11.582 a 13.716m(38-45ft).

A. High precision in size and shape
B. Good low temperature toughness
C. Excellent comprehensive mechanical properties
D. High connection strength and sealability
E. Large inside diameter of tool joint
F. High torque resistance
G. High fatigue strength and long fatigue life

Specification:

Size(inch)	Weight Designation	Calculated Plain-End weight		Outside Diameter		Wall Thickness
Size(inch)	Weight Designation	Lb/ft	Kg/m	inch	mm	inch	mm
2‐3/8	6.65	6.26	9.32	2.375	60.3 mm	0.28	7.11 mm
2‐7/8	10.4	9.72	14.48	2.875	73.0 mm	0.362	9.19 mm
3‐1/2	9.5	8.81	13.12	3.5	88.9 mm	0.254	6.45 mm
3‐1/2	13.3	12.31	18.34	3.5	88.9 mm	0.368	9.35 mm
3‐1/2	15.5	14.63	21.79	3.5	88.9 mm	0.449	11.40 mm
4	14	12.93	19.26	4	101.6 mm	0.33	8.38 mm
4‐1/2	13.75	12.24	18.23	4.5	114.3 mm	0.271	6.88 mm
4‐1/2	16.6	14.98	22.31	4.5	114.3 mm	0.337	8.56 mm
4‐1/2	20	18.69	27.84	4.5	114.3 mm	0.43	10.92 mm
5	16.25	14.87	22.15	5	127.0 mm	0.296	7.52 mm
5	19.5	17.93	26.71	5	127.0 mm	0.362	9.19 mm
5	25.6	24.03	35.79	5	127.0 mm	0.5	12.70 mm

Strength:

Group	Grade	Yield Strength				Tensile Strength
		Minimum		Maximum		Minimum
		Psi	Mpa	Psi	Mpa	Psi	Mpa
1	E-75	75000	517	105000	724	100000	689
2	X-95	95000	655	125000	862	105000	724
	G-105	105000	724	135000	931	115000	793
	S-135	135000	931	165000	1138	145000	1000

Case Study

Products & Service

API Oil Drilling Pipe/ Oil Well Drilling Pipe

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