Shandong Senlian Metal Technology Co.,Ltd

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Well Casing & Tubing

Phone : 0635-8262629

Whatsapp : +86 18063587390

Email : office@sdslmetal.com

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Casing Pipe, Steel Casing Pipe, Well Casing, OCTG Casing

Sizes:

Out Diameter: 1.315"- 20"

Wall Thickness: 0.133"-0.500"

Length:R1(group1),R2(group2),R3(group3)

Materials & Grades:

Casing: API 5CT J55, K55, N80, L80-1, L80-9Cr, L80-13Cr, P110

Application:

oil well extracting

borehole

borewell

Types:

Seamless Casing

ERW Casing

Casing nipple

Casing coupling

Connections:

P (Plain end)

STC (short threads)

LTC (long threads)

BTC (buttress threads)

Premium gas-tight connectors

Non-upset ends (NUE)

External upset ends (EUE)

Premium gas-tight connectors

Others special connectors

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

Mechanical properties of casing pipe

Grade	Type	Total elongationunder load(%)	Yield strength(min)Mpa	Yield strength(max)Mpa	Tensile strengthmin Mpa	HardnessMax (HRC)	HardnessMax (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	-	-

Casing Pipe Manufacturing Process:

Steel ingot heating → hydraulic punching → reheating → extension → periodic rolling → reheating → sizing → cooling → straightening → pipe cutting → inspection

1. An annular heating furnace is required for ingot heating;

2. Punching and reheating with hydraulic press;

3. The oil casing plant uses a two-roller guide plate extension machine for extension;

4. Re-use a disc heating furnace for periodic rolling, and use a non-entry furnace for reheating, cooling, straightening, pipe cutting, and inspection.

Color Codes for API 5CT Casing and Tubing:

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Q: How many days of your delivery?
A: The general delivery is 20~45 days according to your quantity. If your order is urgent, we would like to try our best to meet your requests.
Q: What's your main market?
A: We mainly export to the Middle East, South-Eastern Asia And South America,Asia, etc.
Q: Are you manufacturery or trade company?
A: Yeah, we are. We are manufacturer, has more than 4 years of professional production experience.
Q: Can I get some samples?
A: Yes, we can provide you sample, but you need to pay for the sample and freight firstly.We will return the sample fee after you make an order.
Q: How do you guarantee the quality of the products?
A: Each product from our factory has strict testing procedures, and must be 100% quality before delivery.
Q: After Services:
A:(1) Our sales team will response for your question within 24 hours (Holidays included).
(2) Technical Support will be available in any time.
(3)Free replacement will provide once the failure confirmed caused by our product quality.
Q:Methods of Payment:
A:We offer different payment terms, including T/T, D/A, D/P, L/C and O/A, etc. You can choose your preferred payment methods before we shipping the goods.

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