Name: OCTG Casing Pipe
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OCTG Casing Pipe

The OCTG Casing Pipe extends the life of the well. The materials used are carefully selected to withstand the corrosive environment of oil and gas Wells. Common materials include carbon steel, stainless steel and alloy steel.

Different minimum order quantities lead to different product prices
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What is OCTG Casing pipe?

OCTG casing pipe is the lining of a well that is drilled into the ground for oil recovery and gas stabilization. OCTG casing is subject to axial tension and high internal pressure when pumping oil or gas. Similar to drill pipe, oil well OCTG casing is subject to axial tension and therefore requires the use of high quality strong steel materials. They have to withstand external pressures from the rocks around them.

OCTG casing pipe is a large diameter pipe that needs to be cemented in the hole. OCTG casing diameters range from 4.5 "to 20". Bestar Steel has extensive experience in providing OCTG casing, which will be of the best price and internationally certified quality. OCTG casing is a large diameter pipe that is fixed in the wellbore using cement. The well cemented and durable string is the structural component of the well and ensures the integrity of the well. OCTG casing prevents well collapse during drilling.

Casing Pipe Chemical compositions of casing pipe

Standard	Grade	Chemical compositions（％）
API SPEC 5CT	J55	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
	K55	0.34～0.39	0.20～0.35	1.25～1.50	≤0.020	≤0.015	≤0.15	≤0.20	≤0.20	/	/
	N80	0.34～0.38	0.20～0.35	1.45～1.70	≤0.020	≤0.015	≤0.15	/	/	/	0.11～0.16
	L80	0.15～0.22	≤1.00	0.25～1.00	≤0.020	≤0.010	12.0～14.0	≤0.20	≤0.20	/	/
	P110	0.26～0.395	0.17～0.37	0.40～0.70	≤0.020	≤0.010	0.80～1.10	≤0.20	≤0.20	0.15～0.25	≤0.08

Casing Pipe Mechanical properties of casing pipe

Grade	Type	Total elongation under load (%)	Yield strength (min)	Yield strength (max)	Tensile strength min Mpa	Hardness Max (HRC)	Hardness Max(HBW)
J55	-	0.5	379	552	517	-	-
K55	-	0.5	379	552	655	-	-
N80	1	0.5	552	758	689	-	-
N80	Q	0.5	552	758	689	-	-
L80	1	0.5	552	655	655	23	241
L80	9Cr	0.5	552	655	655	23	241
L80	13Cr	0.5	552	655	655	23	241
C90	-	0.5	621	724	689	25.4	255
C95	-	0.5	655	758	724	-	-
T95	-	0.5	655	758	724	25.4	255
P110	-	0.6	758	965	862	-	-
Q125	All	0.65	862	1034	931	-	-

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FAQ

Q: Are You Manufacture or Trade Company?
A: We are the professional manufacturer of steel products located in Shandong province, China. Welcome to contact us and visit our factory before you place orders.
Q: How do you guarantee the quality?
A: We can send free samples to you, we can accept third-party testing.
We also have test certificate, every batch goods will be testing before shipment, and the testing report will delivery to you with your goods.
Q: Can I get free samples?
A: Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.
Q: What is the MOQ?
A: If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.
Q: Can you OEM or ODM?
A: Yes, we have a strong developing team. The products can be made according to your request

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