API 5CT Pipe

API 5CT Pipe

Standard
API SPEC 5CT

Application
Seamless steel tubes for oil casing and tubing in oil wells

Grade
J55, K55, N80-1, N80, L80, P110, C75-2, C95, C90, T95, Q125, with both API Connection of STC, LTC & BTC and Premium Connection of HSM, HSC & GT etc

Diamensional Tolerances

Outer diameter		Wall thickness
Tube sizes(mm)	Tolerances(mm)	Tolerances(mm)
below 114.3	+/- 0.79	+/- 12.5%

Mechanical Properties

Standard	Grade	Tensite strength (MPa)	Yield strength (MPa)	Elongation (%)	Hardness
API SPEC 5CT	J55	min 517	379-552	check the table
	K55	min 517	min 655
	N80	min 689	552-758
	L80(13Cr)	min 655	552-655		max241HB
	P110	min 862	758-965

Chemical Composition

Standard

Grade

Chemical Compositions (%)

API SPEC 5CT

J55K55

0.34
-0.39

0.20
-0.35

1.25
-1.50

max 0.020

max 0.015

max 0.15

max 0.20

max 0.020

(37Mn5)

N80

0.34
-0.38

0.20
-0.35

1.45
-1.70

max 0.020

max 0.015

max 0.15

0.11
-0.16

max 0.020

(36 Mn2V)

L80(13Cr)

0.15
-0.22

max 1.00

0.25
-1.00

max 0.020

max 0.010

12.0-14.0

max 0.20

max 0.020

P110

0.26
-0.35

0.17
-0.37

0.40
-0.70

max 0.020

max 0.010

0.80-1.10

max 0.20

0.15-0.25

max 0.08

max 0.020

(30CrMo)

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