API 5CT Casing & Tubing

API 5CT: Specification for Casing and Tubing
Tubing is used for extracting oil or gas from wells.
Casing & Tubing
API range of Plain end, round thread (STC and LTC), Buttress Thread and Extreme-line casing and API NUE, EUE and IJ tubing.
Tubing and casing with Premium connection.
Specification & Standard :
H40, J55, K55, N80(-1,-Q), L80, L80 9Cr&13Cr, P110,Q125, etc.
Size Range:
4 ? Inches and Up for Casing
1.050 Inches and Up for Tubing

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Introduction
Description

API 5CT: Specification for Casing and Tubing
Tubing is used for extracting oil or gas from wells.
Casing & Tubing
API range of Plain end, round thread (STC and LTC), Buttress Thread and Extreme-line casing and API NUE, EUE and IJ tubing.
Tubing and casing with Premium connection.
Specification & Standard :
H40, J55, K55, N80(-1,-Q), L80, L80 9Cr&13Cr, P110,Q125, etc.
Size Range:
4 ? Inches and Up for Casing
1.050 Inches and Up for Tubing

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Label				D Outside diameter mm	Wall thickness mm	C type of end-finish
Label
1	2
1	NU T&C	EU T&C	IJ			H40	J55	L80	N80	C90	T95	P110
1.9	2.75	2.9	4	48.26	3.68	PNUI	PNUI	PNUI	PNUI	PNUI	PNUI
	3.65	3.73	2.76	48.26	5.08	PU	PU	PU	PU	PU	PU	PU
	4.42	-	-	48.26	6.35	-	-	P	-	P	P	-
2 3/8	4	-	-	60.32	4.24	PU	PN	PN	PN	PN	PN	-
	4.6	4.7	-	60.32	4.83	PNU	PNU	PNU	PNU	PNU	PNU	PNU
	5.8	5.95	-	60.32	6.45	-	-	PNU	PNU	PNU	PNU	PNU
	6.6	-	-	60.32	7.49	-	-	P	-	P	P	-
	7.35	7.45	-	60.32	8.53	-	-	PU	-	PU	PU	-
2 7/8	6.4	6.5	-	73.02	5.51	PNU	PNU	PNU	PNU	PNU	PNU	PNU
	7.8	7.9	-	73.02	7.01	-	-	PNU	PNU	PNU	PNU	PNU
	8.6	8.7	-	73.02	7.82	-	-	PNU	PNU	PNU	PNU	PNU
	9.35	9.45	-	73.02	8.64	-	-	PU	-	PU	PU	-
	10.5	-	-	73.02	9.96	-	-	P	-	P	P	-
3 1/2	7.7	-	-	88.9	5.49	PN	PN	PN	PN	PN	PN	-
	9.2	9.3	-	88.9	6.45	PNU	PNU	PNU	PNU	PNU	PNU	PNU
	10.2	-	-	88.9	7.34	PN	PN	PN	PN	PN	PN	-
	12.7	12.95	-	88.9	9.52	-	-	PNU	-	PNU	PNU	PNU
	14.3	-	-	88.9	10.92	-	-	P	-	P	P	-
	15.5	-	-	88.9	12.09	-	-	P	-	P	P	-
4	9.5	-	-	101.6	5.74	PN	PN	PN	PN	PN	PN	-
	10.7	11	-	101.6	6.65	PU	PU	PU	PU	PU	PU	-
	13.2	-	-	101.6	8.38	-	-	P	-	P	P	-
	16.1	-	-	101.6	10.54	-	-	P	-	P	P	-
4 1/2	12.6	12.75	-	114.3	6.88	PNU	PNU	PNU	PNU	PNU	PNU	-
4 1/2	15.2	-	-	114.3	8.56	-	-	P	-	P	P	-

Group	Grade	Type	Total elongation under load %	Yield Strength M pa		Tensile strength min Mpa	Hardness
Group	Grade	Type	Total elongation under load %	min	max	Tensile strength min Mpa	HRC	HBW
1	2	3	4	5	6	7	8	9
2	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	-	-
3	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	689	689	25.4	255
	C95	-	0.5	655	724	724	-	-
	T95		0.5	655	724	724	25.4	255
	P110	-	0.6	758	862	862	-	-
4	Q125	All	0.65	862	931	931	-	-

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