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HomeProducts Pipe For Oil Service API 5CT

Tubing & Casing API 5CT

Standard: API SPEC 5CT, API SPEC 5B
Steel Grade: J55, K55, L80, N80, C90, C95, T95, P110.
Application: Tubing is used to extracting petroleum and natural gas from a well. Casing serves as walls of a well.

Size of tubing:

Size Designation	Weight Designation		Outer diameter		Wall thickness		Type of end finish
	Weight Designation		Outer diameter		Wall thickness		Grade
	Non-upset T&C	Ex-upset T&C	in.	mm	in.	mm	J55	L80-1	N80	C90		T95	P110
1.900"	2.4	-	1.9	48.26	0.125	3.18	PI	-	-		-	-	-
	2.75	2.9	1.9	48.26	0.145	3.68	PNUI	PNUI	PNUI		PNUI	PNUI	-
	3.65	-	1.9	48.26	0.2	5.08	PU	PU	PU		PU	PU	PU
2 3/8"	4	-	2.375	60.32	0.167	4.24	PN	PN	PN		PN	PN	-
	4	4.7	2.375	60.32	0.19	4.83	PNU	PNU	PNU		PNU	PNU	-
	5.8	5.95	2.375	60.32	0.254	6.45	-	PNU	PNU		PNU	PNU	PNU
	6.6	-	2.375	60.32	0.259	7.49	-	P	-		P	P	PNU
	7.35	7.45	2.375	60.32	0.336	8.53	-	PU	-		PU	PU	-
2 7/8"	6.4	6.5	2.875	73.02	0.217	5.51	PNU	PNU	PNU		PNU	PNU	-
	7.8	7.9	2.875	73.02	0.276	7.01	-	PNU	PNU		PNU	PNU	PNU
	8.6	8.7	2.875	73.02	0.308	7.82	-	PNU	PNU		PNU	PNU	PNU
	9.35	9.45	2.875	73.02	0.34	8.64	-	PU	-		PU	PU	PNU
	10.5	-	2.875	73.02	0.392	9.96	-	P	-		P	P	-
	11.5	-	2.875	73.02	0.44	11.18	-	P	-		P	P	-
3 1/2"	7.7	-	3.5	88.9	0.216	5.49	PN	PN	PN		PN	PN	-
	9.2	9.3	3.5	88.9	0.254	6.54	PNU	PNU	PNU		PNU	PNU	-
	10.2	-	3.5	88.9	0.289	7.34	PN	PN	PN		PN	PN	PNU
	12.7	12.95-	3.5	88.9	0.375	9.52	-	PNU	PNU		PNU	PNU	-
	14.3	-	3.5	88.9	0.43	10.92	-	P	-		P	P	PNU
	15.5	-	3.5	88.9	0.476	12	-	P	-		P	P	-
	17	-	3.5	88.9	0.53	13.46	-	P	-		P	P	-
4"	9.5	-	4	101.6	0.226	5.74	PN	PN	PN		PN	PN	-
4"	10.7	11	4	101.6	0.262	6.65	PU	PU	PU		PU	PU	-
4 1/2"	12.6	12.75	4.5	114.3	0.271	6.88	PNU	PNU	PNU		PNU	PNU	-
	15.2	-	4.5	114.3	0.337	8.56	-	P	-		P	P	-
	17	-	4.5	114.3	0.38	9.65	-	P	-		P	P	-
	18.9	-	4.5	114.3	0.43	10.92	-	P	-		P	P	-
	21.5	-	4.5	114.3	0.5	12.7	-	P	-		P	P	-
	23.7	-	4.5	114.3	0.56	14.22	-	P	-		P	P	-
	26.1	-	4.5	114.3	0.63	16	-	P	-		P	P	-

Note: T&C--Threaded and coupled.

P-Plain end; N-Non-upset threaded and coupled; U-External upset threaded and coupled.

Size of casing:

Size Designation	Weight Designation	Outside Diameter		Wall Thickness		Type of end finish
		Outside Diameter		Wall Thickness		Grade
		in	mm	in	mm	J55 K55	L80-1	N80	C90	C95	T95	P110	M65
		in	mm	in	mm	J55 K55	L80-1	N80	C90	C95	T95	P110	M65
4 1/2"	9.50	4.500	114.30	0.205	5.21	PS	-	-	-	-	-	-	-
	10.50	4.500	114.30	0.224	5.69	PSB	-	-	-	-	-	-	-
	11.60	4.500	114.30	0.250	6.35	PSLB	PLB	PLB	PLB	PLB	PLB	PLB	PLB

	13.50	4.500	114.30	0.290	7.37	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	15.10	4.500	114.30	0.337	8.56	-	-	-	-	-	-	PLB	-
5"	11.50	5.000	127.00	0.220	5.59	PS	-	-	-	-	-	-	-
	13.00	5.000	127.00	0.253	7.52	PSLB	-	-	-	-	-	-	-
	15.00	5.000	127.00	0.296	9.19	PSLB	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	18.00	5.000	127.00	0.362	9.19	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	21.40	5.000	127.00	0.437	11.10	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	23.20	5.000	127.00	0.478	12.14	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	24.10	5.000	127.00	0.500	12.70	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
5 1/2"	14.00	5.500	139.70	0.244	6.20	PS	-	-	-	-	-	-	-
	15.50	5.500	139.70	0.275	6.98	PSLB	-	-	-	-	-	-	-
	17.00	5.500	139.70	0.304	7.72	PSLB	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	20.00	5.500	139.70	0.361	9.17	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	23.00	5.500	139.70	0.415	10.54	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	26.80	5.500	139.70	0.500	12.70	-	-	-	P	-	P	P	P
	29.70	5.500	139.70	0.562	14.27	-	-	-	P	-	P	P	P
	32.60	5.500	139.70	0.625	15.88	-	-	-	P	-	P	P	P
	35.30	5.500	139.70	0.687	17.45	-	-	-	P	-	P	P	P
	38.00	5.500	139.70	0.750	19.05	-	-	-	P	-	P	P	P
	40.50	5.500	139.70	0.812	20.62	-	-	-	P	-	P	P	P
	43.10	5.500	139.70	0.875	22.22	-	-	-	P	-	P	P	P
6 5/8"	20.00	6.625	168.28	0.288	7.32	PSLB	-	-	-	-	-	-	-
	24.00	6.625	168.28	0.352	8.94	PSLB	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	28.00	6.625	168.28	0.417	10.59	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	32.00	6.625	168.28	0.475	12.06	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
5"	20.00	7.000	177.80	0.272	6.91	PS	-	-	-	-	-	-	PS
	23.00	7.000	177.80	0.317	8.05	PSLB	PLB	PLB	PLB	PLB	-	-	PLB
	26.00	7.000	177.80	0.362	9.19	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	29.00	7.000	177.80	0.408	10.36	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	32.00	7.000	177.80	0.453	11.51	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	35.00	7.000	177.80	0.498	12.65	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	38.00	7.000	177.80	0.540	13.72	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
7 5/8"	26.40	7.625	193.68	0.328	8.33	PSLB	PLB	PLB	PLB	PLB	PLB	PLB	-
	29.70	7.625	193.68	0.375	9.52	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	33.70	7.625	193.68	0.430	10.92	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	39.00	7.625	193.68	0.500	12.70	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	42.80	7.625	193.68	0.562	14.27	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	45.30	7.625	193.68	0.595	15.11	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	47.10	7.625	193.68	0.625	15.88	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
8 5/8"	24.00	8.625	219.08	0.624	6.71	PS	-	-	-	-	-	-	-
	28.00	8.625	219.08	0.304	7.72	-	-	-	-	-	-	-	-
	32.00	8.625	219.08	0.352	8.94	PSLB	-	-	-	-	-	-	-
	36.00	8.625	219.08	0.400	10.16	PSLB	PLB	PLB	PLB	PLB	PLB	PLB	-
	40.00	8.625	219.08	0.450	11.43	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	44.00	8.625	219.08	0.500	12.70	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB
	49.00	8.625	219.08	0.557	14.15	-	PLB	PLB	PLB	PLB	PLB	PLB	PLB

Note: P-Plain end; S-Short round thread; L-Long round tread; B-Buttress thread.

Tolerance on dimension:

Item	Outer Diameter		Wall Thickness	Length	Rang 1	Rang 2	Rang 3
Item	D<114.3	D>=114.3	Wall Thickness	Tubing	6.10~7.32	8.53~9.57
Tolerance	±0.79	-0.5%,+1%	+/-12.50%	Casing	4.88~7.62	7.62~10.36	10.36~14.63

Chemical Composition:

Grade	Chemical Compositions (%)
Grade	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Als
J55,K55	0.34~0.39	0.20~0.35	1.25~1.5	≤0.02	≤0.015	≤0.15	≤0.20	≤0.20			≤0.020
N80	0.34~0.38	0.20~0.35	1.45~1.7	≤0.02	≤0.015	≤0.15				0.11~0.16	≤0.020
L80	0.15~0.22	≤1.00	0.25~1.0	≤0.02	≤0.010	12.0~14.0	≤0.20	≤0.20			≤0.020
P110	0.26~0.35	0.17~0.37	0.40~0.7	≤0.02	≤0.010	0.80~1.10	≤0.20	≤0.20	0.15~0.25	≤0.08	≤0.020

Mechanical properties:

Standard	Grade	Tensile strength(Mpa)	Yield strength(Mpa)	Elongation (%)	Hardness
API SPEC 5CT	J55	≥517	379~552	Check the table
	K55	≥517	≥655
	N80	≥689	552~758
	L80	≥655	552~655		≤241HB
	P110	≥862	758~965

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