API 5CT J55 Seamless oil Casing and tubing,OTCG casing R3, 13-3/8 Inch

API 5ct j55 casing and tubing

API 5CT casing and tubing

1)Sizes (O.D. x W.T): from 2 3/8″-4 1/2″ X 0.167″-0.63″

2)Standard: API SPEC 5CT.

3)Steel Grade: J55, K55, N80,L80-1,P110

Casing and Coupling
API 5CT GRADE: J55/K55/N80-1/N80-Q/L80/P110/P110 HC
Outside diameter(mm)	Wall thickness(mm)
Φ114.3	5.69	6.35		7.37		8.56
Φ127	7.52	9.19		11.1		12.14	12.7
Φ139.7	6.98	7.72		9.17		10.54	12.7		14.27		15.87
Φ168.28	7.32	8.94		10.59		12.06
Φ177.8	8.05	9.19		10.36		11.51	12.65		13.72
Φ219	Above 8
Φ244.5	Above 8
Φ273	Above 8
B. Tubing and Coupling
API 5CT GRADE: J55/K55/N80-1/N80-Q/L80/P110/P110 HC
Outside diameter(mm)	Wall thickness(mm)
Φ60.33	4.24		4.83		6.45			7.49		8.53
Φ73.03	5.51		7.01		7.82			8.64		9.96
Φ88.9	5.49		6.45		7.34			9.52		10.92
Φ101.6*	6.65		8.38		10.54			12.7
Φ114.3	6.88		8.56		9.65			10.92		12.70

J55

General purpose manufactured to API specification 5CT. Similar to K55, except that the minimum tensile strength is lower.

Available in casing dimensions of 114.3 mm (4.5″) to 508 mm (20″)

Available in tubing dimensions of 26.7 mm (1.05″) to 114.3 mm (4.5″)

Mechanical Properties of API 5CT casing and tubing

Standard codes	Models of steel tubes	Tensite 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(13Cr)	≥655	552～655		≤241HB
	P110	≥862	758～965

applications of API 5CT casing and tubing:

Structure, electric power transmission tower projects, piling, water, oil & gas pipeline engineering, mechanical industry, municipal projects, roads and its auxiliary facilities, etc.