E-mail: info@pipesl.com

Current position：

Product List

API 5CT N80 Casing pipe

API5CT is an oil casing standard issued by the American Petroleum Institute. N80 oil casing is used for oil well drilling and is mainly used to support the well wall during the drilling process and after well completion, so as to ensure the drilling process and the normal operation of the entire oil well after well completion.
API5CT oil casing can be divided into seamless steel pipe and welded steel pipe, and welded steel pipe mainly refers to straight seam steel pipe. Large-diameter oil casings are generally submerged arc welded straight seam steel pipes.
API 5CT N80 Casing pipe, API 5CT N80 Casing tube, API 5CT L80 Oil casing pipe,L80 casing pipe
1. Specification range:OD: 114.3 MM -508MM(4 1/2"-20”)
2. Materials: H40, J55, K55, N80-1, N80-Q, L80-1,L80-9Cr, L80-13Cr, P110, Q125 etc
3. Executive standards: API 5CT, GB, ISO11960, GOST
4. Length: R1, R2, R3
5. Type: seamless pipe

info@pipesl.com

Message

API 5L welded pipe

API 5CT Casing pipe

Product Details

A casing pipe is a hollow steel tube that is typically rammed into place through the earth by using a hydraulic or pneumatic jack. After being driven, the displaced soil is removed and the product pipe, or carrier pipe, is inserted inside the steel tube.

Casing pipe connections

API 5CT is applicable to following connections which complied with API SPEC 5B:

• SC:Short round thread casing

• LC:Long ound thread casing

• BC:Buttress thread casing

• NU: Non-upset tubing

• EU:External upset tubing

Dimension Tolerance of casing pipe

Types of steel tubes	Outer Diameter		Wall Thickness
Cold-rolled tubes	Tube sizes(mm)	Tolerances(mm)	Tolerances(mm)
	＜114.3	±0.79	－12.5％
	≥114.3	－0.5％，＋1％	－12.5％

Chemical Composition 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 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	-	-

API 5CT N80 Casing pipe Test

Chemical Component Analysis , Mechanical Properties (Ultimate tensile strength ,Yield strength ,Elongation )

Technical Properties ( Flattening test , flaring test , bending test , hardness test , blow test , impact test etc )

Exterior size inspection , Nondestructive test ( Ultrasonic flaw detector , eddy curent flaw detector ) Hydrostatic test .

Mill Test Certificate : EN10204/3.1B and EN10204/3.2 Certificate.

Third Party Inspection : SGS , BV etc

API 5CT N80 Casing pipe

Online Message

Related Products

Seamless Steel Pipe

Straight Seam Steel Pipe

Spiral Welded Steel Pipe

Hot Dip Galvanized Steel Pipe

Coating Steel Pipe

Oil Country Tubular Goods

EN 10216 Seamless Pipe

ASTM A53 Seamless pipe

Black steel pipe

Mild seamless steel pipe

Low Temperature Pipe

Cold drawn seamless steel pipe

Hot rolled seamless steel pipe

Boiler Pipe

Carbon steel seamless pipe

Our Service

Recommend

Factory prefabrication of processing pipelines

2023-12-18 15:37:29

Factory prefabrication of processing pipelinesProcess pipeline is used to transmit medium, which is connected with all the equipment in the device, and through various control components to adjust the

Customized Design and special-shaped pipe fittings processing

2023-12-18 15:37:30

Offering customized drawing design and confirmation services for special-shaped pipes, fittings, valves, etc. From design, and drawing confirmation, to the final product.We Cangzhou Shenlong Pipe Manu

Final Inspection

2023-12-18 15:37:33

Firstly, the professional QC do the tests and inspection as per customers’ requirement or standardsItems:Visual Inspectionsa. Inspect and take measurements of the thickness of the pipes and ensure th

Packing and marking

2023-12-18 15:37:34

One-stop packing and transportation services can be offered. We can provide packing solutions as per clients’ demands. such as the bulk cargo whole cabinet plan, reinforcement protection, taking pictu

Steel Pipe Coating

2023-12-18 15:37:35

To make steel pipes with an anti-corrosion effect refers to measures to slow down or prevent corrosion and deterioration of pipes under the chemical or electrochemical action of the internal and exter

Galvanizing

2023-12-18 15:37:36

Galvanized is one surface treatment that makes the surface of the metal, alloy, or other materials coated with a layer of zinc. In this way, the steel pipes can be more attractive, as well as a rust p

Transport

2023-12-18 15:37:40

Steel pipes and fittings service projects include oil and gas pipeline companies, as well as utilities. Our services are not limited to pipelines, terminals, refineries, and processing facilities. as

Pipe Threading

2023-12-18 15:37:42

Threaded pipes have an effective seal when transporting liquids, gases, steam, and hydraulic fluid. We are also to thread any length of pipe in diameters ranging from 1/8” to 20”. Tapers available are

Roll Grooving

2023-12-18 15:37:43

Cangzhou shenlong pipe manufacturer co.,ltd. can provide both cut grooving and roll grooving. Cut and roll grooving can be done in any style according to industry standards. Cut grooving involves mach

Steel Pipe Beveling

2023-12-18 15:37:44

Beveling is the process in which we form an angle between the edge of a pipe and a plane perpendicular to the surface to a certain degree, most commonly used to prepare the ends of pipes for welding.

Cutting

2023-12-18 15:37:45

We can provide customized cutting to size pipes for natural gas so that the pipes can be easier applied to your project. If you are buying sheets, tubes, plates, or shapes at the required length, plea

Steel Pipe Storage

2023-12-18 15:37:37

After steel pipes are produced as ordered, our experienced yard staff and our warehousing department will arrange cargo handling, storage, and storing of steel products in our facilities temporarily a

About Us

Cangzhou Shenlong Pipe Manufacturing Co., Ltd. is a company& supplier& manufacturer& factory specialized in the production, processing and sales of various steel pipes, such as seamless pipe, welded pipe, straight seam steel pipe, spiral welded steel pipe, hot galvanized steel pipe, coating steel pipe, stainless steel pipe, and pipe fittings, the production base is located in Cangzhou.

Quick Links

Product