The J55 API casing or tubing is a relatively common one in oil drilling.
Because of the low steel grade of J55, it is used for shallow oil and gas extraction.

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Product Details

Product introduction

The J55 API casing or tubing is a relatively common one in oil drilling. Because of the low
steel grade of J55, it is used for shallow oil and gas extraction. Due to its low price among
other grades of steel, it enjoys broader applications. The J55 API casing or tubing is widely
used in the extraction of natural gas and coalbed methane, and can be commonly found in
shallow wells, geothermal wells, and water wells.

J55 Tubing Material can be generally relevant to oil, development, shipbuilding, refining,
aeronautics, electric power, sustenance, paper, compound industry, restorative hardware,
boilers, heat exchangers, metallurgy, etc. 5CT J55 Casing Tubing serves to transport both
unrefined petroleum and gaseous petrol from oil and gas layer to the surface pipeline
subsequent to boring is finished. It can shoulder the weight created by the misuse procedure.

Specification

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.

Dimension Standard of API 5CTQ J-55 Tubing

Size	Weight	Outside Diameter		Wall Thickness		End Finish
		Outside Diameter		Wall Thickness		Grade
		in	mm	in	mm	J55 K55
4 1/2	9.50	4.500	114.3	0.205	5.21	PS
	10.50			0.224	5.69	PSB
	11.60			0.250	6.35	PSLB
	13.50			0.290	7.37	–
	15.10			0.337	9.56	–
5	11.50	5.00	127.00	0.220	5.59	PS
	13.00			0.253	6.43	PSLB
	15.00			0.296	7.52	PSLB
	18.00			0.362	9.19	–
	21.40			0.437	11.10	–
	23.20			0.478	12.14	–
	24.10			0.500	12.70	–
5 1/2	14.00	5.500	139.7	0.244	6.20	PS
	15.50			0.275	6.98	PSLB
	17.00			0.304	7.72	PSLB
	20.00			0.361	9.17	–
	23.00			0.415	10.54	–
6 5/8	20.00	6.625	168.28	0.288	7.32	PSLB
	24.00			0.352	8.94	PSLB
	28.00			0.417	10.59	–
	32.00			0.475	12.06	–
7	17.00	7.00	177.80	0.231	5.87	–
	20.00			0.272	6.91	PS
	23.00			0.317	8.05	PSLB
	26.00			0.362	9.19	PSLB
	29.00			0.408	10.36	–
	32.00			0.453	11.51	–
	35.00			0.498	12.65	–
	38.00			0.540	13.72	–
7 5/8	24.00	7.625	193.68	0.300	7.62	–
	26.40			0.328	8.33	PSLB
	29.70			0.375	9.52	–
	33.70			0.430	10.92	–
	39.00			0.500	12.70	–
	42.80			0.562	14.27	–
	45.30			0.595	15.11	–
	47.10			0.625	15.88	–
8 5/8	24.00	8.625	219.08	0.264	6.71	PS
	28.00			0.304	7.72	–
	32.00			0.352	8.94	PSLB
	36.00			0.400	10.16	PSLB
	40.00			0.450	11.43	–
	44.00			0.500	12.70	–
	49.00			0.557	14.15	–
9 5/8	32.30	9.625	244.48	0.312	7.92	–
	36.00			0.352	8.94	PSLB
	40.00			0.395	10.03	PSLB
	43.50			0.435	11.05	–
	47.00			0.472	11.99	–
	53.50			0.545	13.84	–
	58.40			0.595	15.11	–
10 3/4	32.75	10.75	273.05	0.279	7.09	–
	40.50			0.350	8.89	PSB
	15.50			0.400	10.16	PSB
	51.00			0.450	11.43	PSB
	55.50			0.495	12.57	–
	60.70			0.545	13.84	–
	65.70			0.595	15.11	–
13 3/8	48.00	13.375	339.73	0.330	8.38	–
	54.50			0.380	9.65	PSB
	61.00			0.430	10.92	PSB
	68.00			0.480	12.19	PSB
	72.00			0.514	13.06	–
16	65.00	16	406.40	0.375	9.53	–
	75.00			0.438	11.13	PSB
	84.00			0.495	12.57	PSB
	109.00			0.656	16.66	P
18 5/8	87.50	18.625	473.08	0.435	11.05	PSB
20	94.00	20	508.00	0.438	11.13	PSLB
	106.50			0.500	12.70	PSLB
	133.00			0.635	16.13	PSLB

Technical data

Chemical Composition

Grade	C≤	Si≤	Mn≤	P≤	S≤	Cr≤	Ni≤	Cu≤	Mo≤	V≤	Als≤
API 5CT J55	0.34-0.39	0.20-0.35	1.25-1.50	0.020	0.015	0.15	0.20	0.20	/	/	0.020
API 5CT K55	0.34-0.39	0.20-0.35	1.25-1.50	0.020	0.015	0.15	0.20	0.20	/	/	0.020
API 5CT 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
API 5CT L80	0.15-0.22	1.00	0.25-1.00	0.020	0.010	12.0-14.0	0.20	0.20	/	/	0.020
API 5CT J P110	0.26-035	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	0.020

Mechanical Properties

Steel Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)
API 5CT J55	379-552	≥517
API 5CT K55	≥655	≥517
API 5CT N80	552-758	≥689
API 5CT L80	552-655	≥655
API 5CT P110	758-965	≥862

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