API 5CT SMLS casing K55-N80 whole sale

Product Detail

According to American Petroleum Institute Standard API SPEC 5CT1988 1st edition, the steel grade of API 5CT oil casing pipe can be divided into ten types, including H-40, J-55, K-55, N-80, C-75, L-80, C-90, C-95, P-110 and Q-125. We supply the casing pipe & API 5CT K55 Casing Tubing accompanied with thread and coupling, or we offer our product in accordance with the following forms for option. If you are interested in API 5CT K55 Casing Tubing, we will supply you with the best price based on the highest quality, welcome everyone to cantact us,E-mail:sales@ytdrgg.com,and Remote factory inspection or factory visit

API 5CT K55 Casing Tubing Specfications

API 5CT K55 CASING TUBING SPECIFICATIONS
Available Sizes	2 3/8″, 2 7/8″ and 3 ½” Outer Diameter
Grades	J55, J55-FBNAU, N80, L80, P110
Tubing	1 1/4 “ – 2 1/16” Nom.
Standards	API SPEC 5CT
Model in Common Use	2-3/8″, 2-7/8″, 3-1/2″, 4″, 4-1/2″
Length Range	R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m)
Steel Grade (Casing Grades, Tubing Grades)	J55, K55, N80-1, N80-Q, L80, P110
Type of Screw Thread	Non upset threaded end(NUE), External upset threaded end(EUE)
Specialties	Coating to customer specifications External upset Couplings – EUE, AB Modified, turned down, special clearance couplings Pup Joints Heat treating Hydrostatic Testing Drifting (Full-length, or just ends) Full third-party inspection capabilities (EMI, SEA, and Weld Line) Threading
End Finishing	External Upset Ends (EUE), Flush Joint, PH6 (and equivalent connections), Integral Joint (IJ)

API 5CT K55 Casing Tubing Tensile & Hardness Requirement

Group	Grade	Type	Total elongation under load %	Yield strength MPa		Tensile strength min. MPa	Hardness a max.		Specified wall thickness mm	Allowable hardness variation b HRC
Group	Grade	Type	Total elongation under load %	min.	max .		HRC	HBW	Specified wall thickness mm	Allowable hardness variation b HRC
1	2	3	4	5	6	7	8	9	10	11
1	H40	-	0.5	276	552	414	-	-	-	-
	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	-	-	-	-
	R95	-	0.5	655	758	724	-	-	-	-
2	M65	-	0.5	448	586	586	22	235	-	-
	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	1	0.5	621	724	689	25.4	255	≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40	3.0 4.0 5.0 6.0
	T95	1	0.5	655	758	724	25.4	255	≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40	3.0 4.0 5.0 6.0
	C110	-	0.7	758	828	793	30	286	≤ 12.70 12.71 to 19.04 19.05 to 25.39. ≥ 25.40	3.0 4.0 5.0 6.0
3	P110	-	0.6	758	965	862	-	-	-	-
4	Q125	1	0.65	862	1034	931	b	-	≤ 12.70 12.71 to 19.04 ≥ 19.05	3.0 4.0 5.0
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. b No hardness limits are specified, but the maximum variation is restricted in accordance with 7.8 and 7.9 of API Spec. 5CT.

K55 Casing Tubing Dimensions

Pipe Casing Sizes, Oilfield Casing Sizes & Casing Drift Sizes
Outer Diameter (Casing Pipe Sizes)	4 1/2″-20″, (114.3-508mm)
Standard Casing Sizes	4 1/2″-20″, (114.3-508mm)
Thread Type	Buttress thread casing, Long round thread casing, Short round thread casing
Function	It can protect the tubing pipe.

Oil Tube For Petroleum And Natural Gas Industries

Name of Pipes	Specification			Steel Grade	Standard
	D	(S)	(L)
	(mm)	(mm)	(m)
Petroleum Casing Pipe	127-508	5.21-16.66	6-12	J55. M55. K55. L80. N80. P110.	API Spec 5CT (8)
Petroleum Tubing	26.7-114.3	2.87-16.00	6-12	J55. M55. K55. L80. N80. P110.	API Spec 5CT (8)
Coupling	127-533.4	12.5-15	6-12	J55. M55. K55. L80. N80. P110.	API Spec 5CT (8)

API 5CT K55 Casing Tubing Features

API 5CT K55 Casing Tubing is offered with a free length range from 8m to 13m on basis of the SY/T6194-96 norm. However, it is also available no less than 6m length and its quantity should be no more than 20%.
Deformations which mentioned above are not allowed to appear on the outer surface of API 5CT K55 Casing Tubing coupling.
Any deformation such as hairline, separation, crease, crack or scab is not acceptable on both inner and outer surfaces of the product. All these defects should be completely removed and the removed depth must not exceed 12.5% of nominal wall thickness.
The surface of thread of coupling and API 5CT K55 Casing Tubing should be smooth without any burr, tear or other defects that may have a negative impact on the strength and close connection.

It’s important for oil and gas operators to protect their production well casings from corrosion with cathodic protection & API 5CT OilField Tubing primarily serves to transfer oil and gases.

API 5CT Grade K55 Casing Tubing Steel Color Code

Name	J55	K55	N80-1	N80-Q	L80-1	P110
Casing	a bright green band	two bright green bands	a bright red band	a bright red band + a green band	a red band + a brown band	a bright white band
Coupling	entire green coupling + a white band	entire green coupling	entire red coupling	entire red coupling + a green band	entire red coupling + a brown band	entire white coupling

ISO/API casing/ API 5CT K55 Casing Tubing specifications

Codea		Outer Dia	Nominal weight (with thread and coupling) b,c	Wall Thickness	End processing type
Codea		mm	kg/m	mm	H40	J55	M65	L80	N801	C90d	P110	Q125d
In	Lb/ft	mm	kg/m	mm	H40	K55	M65	C95	N80Q	T95d	P110	Q125d
1	2	3	4	5	6	7	8	9	10	11	12	13
4-1-2	9.5	114.3	14.14	5.21	S	S	S	-	-	-	-	-
4-1-2	10.5	114.3	15.63	5.69	-	SB	SB	-	-	-	-	-
4-1-2	11.6	114.3	17.26	6.35	-	SLB	-	LB	LB	-	LB	-
4-1-2	13.5	114.3	20.09	7.37	-	-	LB	-	LB	-	-	-
4-1-2	15.1	114.3	22.47	8.56	-	-	-	-	-	-	LB	LB
5	11.5	127	17.11	5.59	-	S	S	-	-	-	-	-
5	13	127	19.35	6.43	-	SLB	SLB	-	-	-	-	-
5	15	127	22.32	7.52	-	SLB	LB	-	-	-	LB	-
5	18	127	26.79	9.19	-	-	LB	-	LB	-	-	LB
5	21.4	127	31.85	11.1	-	-	LB	-	LB	-	-	LB
5	23.2	127	34.53	12.14	-	-	-	LB	-	-	-	LB
5	24.1	127	35.86	12.7	-	-	-	LB	-	-	-	LB
5-1-2	14	139.7	20.83	6.2	S	S	S	-	-	-	-	-
5-1-2	15.5	139.7	23.07	6.98	-	SLB	SLB	-	-	-	-	-
5-1-2	17	139.7	25.3	7.72	-	SLB	LB	-	-	LB	-	-
5-1-2	20	139.7	29.76	9.17	-	-	LB	-	LB	-	-	-
5-1-2	23	139.7	34.23	10.54	-	-	-	LB	-	LB	-	-
6-5-8	20	168.28	29.76	7.32	S	SLB	SLB	-	-	-	-	-
6-5-8	24	168.28	35.72	8.94	-	SLB	LB	-	-	LB	-	-
6-5-8	28	168.28	41.67	10.59	-	-	-	-	LB	-	LB	-
6-5-8	32	168.28	47.62	12.06	-	-	-	LB			LB
7	17	177.8	25.3	5.87	S	-	-	-	-	-	-	-
7	20	177.8	29.76	6.91	S	S	S	-	-	-	-	-
7	23	177.8	34.23	8.05	-	SLB			LB	LB	-	-
7	26	177.8	38.69	9.19	-	SLB	LB				LB	-
7	29	177.8	43.16	10.36	-	-	LB				LB	-
7	32	177.8	47.62	11.51	-	-		LB		LB	LB	-
7	35	177.8	52.09	12.65	-	-	-	LB		LB		LB
7-5-8	24	193.68	35.72	7.62	S	-	-	-	-	-	-	-
7-5-8	26.4	193.68	39.29	8.33	-		SLB		LB		LB	-
7-5-8	29.7	193.68	44.2	9.52	-	-		LB		LB		-
7-5-8	33.7	193.68	50.15	10.92	-	-		LB			LB	-
7-5-8	39	193.68	58.04	12.7	-	-	-		LB			LB
7-5-8	42.8	193.68	63.69	14.27	-	-	-	LB			LB	LB
7-5-8	45.3	193.68	67.41	15.11	-	-	-	LB			LB	LB
7-5-8	47.1	193.68	70.09	15.88	-	-	-	LB			LB	LB
8-5-8	24	219.08	35.72	6.71	-	S	S	-	-	-	-	-
8-5-8	28	219.08	41.67	7.72	S	-	S	-	-	-	-	-
8-5-8	32	219.08	47.62	8.94	S	SLB	SLB	-	-	-	-	-
8-5-8	36	219.08	53.57	10.16	-	SLB	SLB	LB			LB	-
8-5-8	40	219.08	59.53	11.43	-	-	LB	LB				-
8-5-8	44	219.08	65.48	12.7	-	-	-	LB			LB
8-5-8	49	219.08	72.92	14.15	-	-	-	LB	LB			LB

API 5CT Casing pipe Codea		API 5CT Casing pipe Outer diameter	API 5CT Casing pipe Nominal weight (with thread and coupling) b,c	API 5CT Casing pipe Wall thickness	API 5CT Casing pipe End processing type
API 5CT Casing pipe Codea		mm	kg/m	mm	H40	J55	M65	L80	N80	C90d	P110	Q125d
In	Lb/ft	mm	kg/m	mm	H40	K55	M65	C95	1, Q	T95d	P110	Q125d
1	2	3	4	5	6	7	8	9	10	11	12	13
9-5-8	32.3	244.48	48.07	7.92	S	-	-	-	-	-	-	-
9-5-8	36	244.48	53.57	8.94	S	SLB	SLB	-	-	-	-	-
9-5-8	40	244.48	59.53	10.03	-	SLB	SLB	LB	LB	LB	-	-
9-5-8	43.5	244.48	64.73	11.05	-	-	LB	LB	LB	LB	LB	-
9-5-8	47	244.48	69.94	11.99	-	-	LB	LB	LB	LB	LB	LB
9-5-8	53.5	244.48	79.62	13.84	-	-	-	LB	LB	LB	LB	LB
9-5-8	58.4	244.48	86.91	15.11	-	-	-	LB	LB	LB	LB	LB
10-3-4	32.75	273.05	48.74	7.09	S	-	-	-	-	-	-	-
10-3-4	40.5	273.05	60.27	8.89	S	SB	SB	-	-	-	-	-
10-3-4	45.5	273.05	67.71	10.16	-	SB	SB	-	-	-	-	-
10-3-4	51	273.05	75.9	11.43	-	SB	SB	SB	SB	SB	SB	-
10-3-4	55.5	273.05	82.59	12.57	-	-	SB	SB	SB	SB	SB	-
10-3-4	60.7	273.05	90.33	13.84	-	-	-	-	-	SB	SB	SB
10-3-4	65.7	273.05	97.77	15.11	-	-	-	-	-	SB	SB	SB
11-3-4	42	298.45	62.5	8.46	S	-	-	-	-	-	-	-
11-3-4	47	298.45	69.94	9.53	-	SB	SB	-	-	-	-	-
11-3-4	54	298.45	80.36	11.05	-	SB	SB	-	-	-	-	-
11-3-4	60	298.45	89.29	12.42	-	SB	SB	SB	SB	SB	SB	SB
13-3-8	48	339.72	71.43	8.38	S	-	-	-	-	-	-	-
13-3-8	54.5	339.72	81.1	9.65	-	SB	SB	-	-	-	-	-
13-3-8	61	339.72	90.78	10.92	-	SB	SB	-	-	-	-	-
13-3-8	68	339.72	101.19	12.19	-	SB	SB	SB	SB	SB	SB	-
13-3-8	72	339.72	107.15	13.06	-	-	-	SB	SB	SB	SB	SB
16	65	406.4	96.73	9.53	S	-	-	-	-	-	-	-
16	75	406.4	111.61	11.13	-	SB	SB	-	-	-	-	-
16	84	406.4	125.01	12.57	-	SB	SB	-	-	-	-	-
18-5-8	87.5	473.08	130.21	11.05	S	SB	SB	-	-	-	-	-
20	94	508	139.89	11.13	SL	SLB	SLB	-	-	-	-	-
20	106.5	508	158.49	12.7	-	SLB	SLB	-	-	-	-	-
20	133	508	197.93	16.13	-	SLB	-	-	-	-	-	-
S-Short round thread, L-Long round thread, B-Buttress thread
a. Code is used for ordering reference.
b. The nominal weight of threaded and coupled casing (column 2) is shown for reference only.
c. Martensitic chromium steel (L80 9Cr and 13Cr) differs from carbon steel in density. The shown weight of martensitic chromium steel is not an exact value. The mass correction factor 0.989 can be used.
d. C90, T95 and Q125 steel grade casing should be supplied according to specification, weight and wall thickness listed in the above table or order.

API 5CT K55 Chemical Composition

Group	Grade	Type	C		Mn		Mo		Cr		Ni max.	Cu max.	P max.	S max.	Si max.
Group	Grade	Type	min.	max.	min.	max.	min.	max.	min.	max.	Ni max.	Cu max.	P max.	S max.	Si max.
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
1	H40	-	-	-	-	-	-	-	-	-	-	-	0.03	0.03	-
	J55	-	-	-	-	-	-	-	-	-	-	-	0.03	0.03	-
	K55	-	-	-	-	-	-	-	-	-	-	-	0.03	0.03	-
	N80	1	-	-	-	-	-	-	-	-	-	-	0.03	0.03	-
	N80	Q	-	-	-	-	-	-	-	-	-	-	0.03	0.03	-
	R95	-	-	0.45 c	-	1.9	-	-	-	-	-	-	0.03	0.03	0.45
2	M65	-	-	-	-	-	-	-	-	-	-	-	0.03	0.03	-
	L80	1	-	0.43 a	-	1.9	-	-	-	-	0.25	0.35	0.03	0.03	0.45
	L80	9Cr	-	0.15	0.3	0.6	0.9	1.1	8	10	0.5	0.25	0.02	0.01	1
	L80	13Cr	0.15	0.22	0.25	1	-	-	12	14	0.5	0.25	0.02	0.01	1
	C90	1	-	0.35	-	1.2	0.25 b	0.85	-	1.5	0.99	-	0.02	0.01	-
	T95	1	-	0.35	-	1.2	0.25 d	0.85	0.4	1.5	0.99	-	0.02	0.01	-
	C110	-	-	0.35	-	1.2	0.25	1	0.4	1.5	0.99	-	0.02	0.005	-
3	P110	e	-	-	-	-	-	-	-	-	-	-	0.030 e	0.030 e	-
4	Q125	1	-	0.35		1.35	-	0.85	-	1.5	0.99	-	0.02	0.01	-
a The carbon content for L80 may be increased up to 0.50 % maximum if the product is oil-quenched. b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the wall thickness is less than 17.78 mm. c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched. d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm. e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum. NL = no limit. Elements shown shall be reported in product analysis.