Casing & Tubing

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ZhiSheng Pipe offers a complete range of API 5CT casing and tubing for all types of oil exploration and production demands. The material includes carbon steel (for the most common use), alloy, chrome and high alloy steels. API 5CT grades cover J55 / K55, N80 type 1 and N80Q, L80, C90, T95, P110, Q125, and with additional requirements of 13 Cr.

Supply Range
Casing Size: OD: 4-1/2″ – 20″ (114.3 mm – 508 mm)
Tubing Size: OD: 2-3/8″ – 4-1/2″ (60.3 mm – 114.3 mm)
Length: R1 (4.88 m – 7.62 m), R2 (7.62 m – 10.36 m), R3 (10.36 m – longer)
Standard: API 5CT, JIS G3439, BS EN ISO 11960, NF M87-207
Material: H40, J55, K55, N80, L80, C90, T95, P110, Q125, 13Cr
Type of connections for Casing: BTC (thread coupling buttress), LTC (long round thread coupling), premium connection.
Types of connections for Tubing: BTC, NUE, EUE, Premium
Usage: Conveying gas, water, oil, natural gas

Premium connections
Premium connections that replace the connections VAM TOP, NEW VAM, HYDRIL CS, TPCQ (TPCO), HSM-1/HSM-2 (Hengyang Valin Connections), and etc.

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
• IJ: Integral tubing connections

The most common API tubing specifications are listed here. Others steel grades, nominal weights, and connections are available on request.

Label

OD (mm)

WT (mm)

Type of End-finish

NU T&C

EU T&C

H40

J55

L80

N80

C90

T95

P110

1.9

2.75

2.9

2.76

48.26

3.68

PNUI

–

1.9

3.65

3.73

–

48.26

5.08

1.9

4.42

–

48.26

6.35

–

2 3/8

–

60.32

4.24

–

2 3/8

4.6

4.7

–

60.32

4.83

PNU

2 3/8

5.8

5.95

–

60.32

6.45

–

PNU

2 3/8

6.6

–

60.32

7.49

–

2 3/8

7.35

7.45

–

60.32

8.53

–

2 7/8

6.4

6.5

–

73.02

5.51

PNU

2 7/8

7.8

7.9

–

73.02

7.01

–

PNU

2 7/8

8.6

8.7

–

73.02

7.82

–

PNU

2 7/8

9.35

9.45

–

73.02

8.64

–

2 7/8

10.5

–

73.02

9.96

–

3 1/2

7.7

–

88.9

5.49

–

3 1/2

9.2

9.3

–

88.9

6.45

PNU

3 1/2

10.2

–

88.9

7.34

–

3 1/2

12.7

12.95

–

88.9

9.52

–

PNU

3 1/2

14.3

–

88.9

10.92

–

3 1/2

15.5

–

88.9

12.09

–

9.5

–

101.6

5.74

–

10.7

–

101.6

6.65

–

13.2

–

101.6

8.38

–

16.1

–

101.6

10.54

–

4 1/2

12.6

12.75

–

114.3

6.88

PNU

–

4 1/2

15.2

–

114.3

8.56

–

Mechanical Properties

Standard	Steel Grade	Tensile Strength(MPa)	Yield Strength(MPa)	Elongation(%)	Hardness
API SPEC 5CT	J55	≥517	379～552	0.5%
	K55	≥655	379~552	0.5%
	N80	≥689	552~758	0.5%
	L80(13Cr)	≥655	552~655	0.5%	≤241HB
	P110	≥862	758~965	0.6%

Chemical Compositions(%)

Standard

Steel Grade

Chemical Compositions(%)

Als

API SPEC 5CT

J55

0.34～0.39

0.20～0.35

1.25～1.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.020

K55

0.34～0.39

0.20～0.35

1.25～1.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.020

N80

0.34～0.38

0.20～0.35

1.45～1.70

≤0.020

≤0.015

≤0.15

0.11～0.16

≤0.020

L80(13Cr)

0.15～0.22

≤1.00

0.25～1.00

≤0.020

≤0.010

12.0～14.0

≤0.20

≤0.020

P110

0.26～0.35

0.17～0.37

0.40～0.70

≤0.020

≤0.010

0.80～1.10

≤0.20

0.15～0.25

≤0.08

≤0.020

API Casing Specifications

Labels		Outside diameter D	Nominal linear mass T&C	Wall thickness t	J55	N80	L80	C90	P110	Q125
Labels		mm	kg/m	mm	K55	–	L80	T95	P110	Q125
1	2	3	4	5	6	7	8	9	10	11
4 1/2	9.5	114.3	14.14	5.21	PS	–	–	–	–	–
4 1/2	10.5	114.3	15.63	5.69	PSB	–	–	–	–	–
4 1/2	11.6	114.3	17.26	6.35	PSLB	PLB	PLB	PLB	PLB	–
4 1/2	13.5	114.3	20.09	7.37	–	PLB	PLB	PLB	PLB	–
4 1/2	15.1	114.3	22.47	8.56	–	–	–	–	PLB	PLB
5	11.5	127	17.11	5.59	PS	–	–	–	–	–
5	13	127	19.35	6.43	PSLB	–	–	–	–	–
5	15	127	22.32	7.52	PSLBE	PLBE	PLBE	PLBE	PLBE	–
5	18	127	26.79	9.19	–	PLBE	PLBE	PLBE	PLBE	PLBE
5	21.4	127	31.85	11.1	–	PLB	PLB	PLB	PLB	PLB
5	23.2	127	34.53	12.14	–	PLB	PLB	PLB	PLB	PLB
5	24.1	127	35.86	12.7	–	PLB	PLB	PLB	PLB	PLB
5 1/2	14	139.7	20.83	6.2	PS	–	–	–	–	–
5 1/2	15.5	139.7	23.07	6.98	PSLBE	–	–	–	–	–
5 1/2	17	139.7	25.3	7.72	PSLBE	PLBE	PLBE	PLBE	PLBE	–
5 1/2	20	139.7	29.76	9.17	–	PLBE	PLBE	PLBE	PLBE	–
5 1/2	23	139.7	34.23	10.54	–	PLBE	PLBE	PLBE	PLBE	PLBE
5 1/2	26.8	139.7	39.88	12.7	–	–	–	P	–	–
5 1/2	29.7	139.7	44.2	14.27	–	–	–	P	–	–
5 1/2	32.6	139.7	48.51	15.88	–	–	–	P	–	–
5 1/2	35.3	139.7	52.53	17.45	–	–	–	P	–	–
5 1/2	38	139.7	56.55	19.05	–	–	–	P	–	–
5 1/2	40.5	139.7	60.27	20.62	–	–	–	P	–	–
5 1/2	43.1	139.7	64.14	22.22	–	–	–	P	–	–
6 5/8	20	168.28	29.76	7.32	PSLB	–	–	–	–	–
6 5/8	24	168.28	35.72	8.94	PSLBE	PLBE	PLBE	PLBE	PLBE	–
6 5/8	28	168.28	41.67	10.59	–	PLBE	PLBE	PLBE	PLBE	–
6 5/8	32	168.28	47.62	12.06	–	PLBE	PLBE	PLBE	PLBE	PLBE
7	17	177.8	25.3	5.87	–	–	–	–	–	–
7	20	177.8	29.76	6.91	PS	–	–	–	–	–
7	23	177.8	34.23	8.05	PSLBE	PLBE	PLBE	PLBE	–	–
7	26	177.8	38.69	9.19	PSLBE	PLBE	PLBE	PLBE	PLBE	–
7	29	177.8	43.16	10.36	–	PLBE	PLBE	PLBE	PLBE	–
7	32	177.8	47.62	11.51	–	PLBE	PLBE	PLBE	PLBE	–
7	35	177.8	52.09	12.65	–	PLBE	PLBE	PLBE	PLBE	PLBE
7	38	177.8	56.55	13.72	–	PLBE	PLBE	PLBE	PLBE	PLBE
7	42.7	177.8	63.54	15.88	–	–	–	P	–	–
7	46.4	177.8	69.05	17.45	–	–	–	P	–	–
7	50	177.8	74.56	19.05	–	–	–	P	–	–
7	53.6	177.8	79.77	20.62	–	–	–	P	–	–
7	57.1	177.8	84.97	22.22	–	–	–	P	–	–
7 5/8	24	193.68	35.72	7.62	–	–	–	–	–	–
7 5/8	26.4	193.68	39.29	8.33	PSLBE	PLBE	PLBE	PLBE	–	–
7 5/8	29.7	193.68	44.2	9.52	–	PLBE	PLBE	PLBE	PLBE	–
7 5/8	33.7	193.68	50.15	10.92	–	PLBE	PLBE	PLBE	PLBE	–
7 5/8	39	193.68	58.04	12.7	–	PLBE	PLBE	PLBE	PLBE	PLBE
7 5/8	42.8	193.68	63.69	14.27	–	PLB	PLB	PLB	PLB	PLB
7 5/8	45.3	193.68	67.41	15.11	–	PLB	PLB	PLB	PLB	PLB
7 5/8	47.1	193.68	70.09	15.88	–	PLB	PLB	PLB	PLB	PLB
7 5/8	51	193.68	76.19	17.45	–	–	–	P	–	–
7 5/8	55.3	193.68	82.3	19.05	–	–	–	P	–	–
8 5/8	24	219.08	35.72	6.71	PS	–	–	–	–	–
8 5/8	28	219.08	41.67	7.72	–	–	–	–	–	–
8 5/8	32	219.08	47.62	8.94	PSLBE	–	–	–	–	–
8 5/8	36	219.08	53.57	10.16	PSLBE	PLBE	PLBE	PLBE	–	–
8 5/8	40	219.08	59.53	11.43	–	PLBE	PLBE	PLBE	PLBE	–
8 5/8	44	219.08	65.48	12.7	–	PLBE	PLBE	PLBE	PLBE
8 5/8	49	219.08	72.92	14.15	–	PLBE	PLBE	PLBE	PLBE	PLBE
9 5/8	32	244.48	48.07	7.92	–	–	–	–	–	–
9 5/8	36	244.48	53.57	8.94	PSLB	–	–	–	–	–
9 5/8	40	244.48	59.53	10.03	PSLBE	PLBE	PLBE	PLBE	–	–
9 5/8	43.5	244.48	64.73	11.05	–	PLBE	PLBE	PLBE	PLBE	–
9 5/8	47	244.48	69.94	11.99	–	PLBE	PLBE	PLBE	PLBE	PLBE
9 5/8	53.5	244.48	79.62	13.84	–	PLBE	PLBE	PLBE	PLBE	PLBE
9 5/8	58.4	244.48	86.91	15.11	–	PLB	PLB	PLB	PLB	PLB
9 5/8	59	244.48	88.4	15.47	–	–	–	P	–	–
9 5/8	64.9	244.48	96.58	17.07	–	–	–	P	–	–
9 5/8	70.3	244.48	104.62	18.64	–	–	–	P	–	–
9 5/8	75.6	244.48	112.5	20.24	–	–	–	P	–	–
10 3/4	32.75	273.05	48.74	7.09	–	–	–	–	–	–
10 3/4	40.5	273.05	60.27	8.89	PSB	–	–	–	–	–
10 3/4	45.5	273.05	67.71	10.16	PSBE	–	–	–	–	–
10 3/4	51	273.05	75.9	11.43	PSBE	PSBE	PSBE	PSBE	PSBE	–
10 3/4	55	273.05	82.59	12.57	–	PSBE	PSBE	PSBE	PSBE	–
10 3/4	60.7	273.05	90.33	13.84	–	–	–	PSBE	PSBE	PSBE
10 3/4	65.7	273.05	97.77	15.11	–	–	–	PSB	PSB	PSB
10 3/4	73.2	273.05	108.93	17.07	–	–	–	P	–	–
10 3/4	79.2	273.05	117.86	18.64	–	–	–	P	–	–
10 3/4	85.3	273.05	126.94	20.24				P
11 3/4	42	298.45	62.5	8.46	–	–	–	–	–	–
11 3/4	47	298.45	69.94	9.53	PSB	–	–	–	–	–
11 3/4	54	298.45	80.36	11.05	PSB	–	–	–	–	–
11 3/4	60	298.45	89.29	12.42	PSB	PSB	PSB	PSB	PSB	PSB
11 3/4	65	298.45	96.73	13.56	–	P	P	P	P	P
11 3/4	71	298.45	105.66	14.78	–	P	P	P	P	P
13 3/8	48	339.72	71.43	8.38	–	–	–	–	–	–
13 3/8	54.5	339.72	81.1	9.65	PSB	–	–	–	–	–
13 3/8	61	339.72	90.78	10.92	PSB	–	–	–	–	–
13 3/8	68	339.72	101.19	12.19	PSB	PSB	PSB	PSB	PSB	–
13 3/8	72	339.72	107.15	13.06	–	PSB	PSB	PSB	PSB	PSB
16	65	406.4	96.73	9.53	–	–	–	–	–	–
16	75	406.4	111.61	11.13	PSB	–	–	–	–	–
16	84	406.4	125.01	12.57	PSB	–	–	–	–	–
16	109	406.4	162.21	16.66	P	P	P	–	P	P
18 5/8	87.5	473.08	130.21	11.05	PSB	–	–	–	–	–
20	94	508	139.89	11.13	PSLB	–	–	–	–	–
20	106.5	508	158.49	12.7	PSLB	–	–	–	–	–
20	133	508	197.93	16.13	PSLB	–	–	–	–	–
P——Plain end; S——Short round thread;L——Long round thread;B——Buttress thread;E——Extreme line.

Casing & Tubing

The most common API tubing specifications are listed here. Others steel grades, nominal weights, and connections are available on request.

API Casing Specifications

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Casing & Tubing

The most common API tubing specifications are listed here. Others steel grades, nominal weights, and connections are available on request.

API Casing Specifications

Quick Links

Services

Inquiry Now

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