jimmyni@yikaisteel.com
API 5CT Pipe StandardAPI SPEC 5CT ApplicationSeamless steel tubes for oil casing and tubing in oil wells GradeJ55, 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
API 5CT Pipe
StandardAPI SPEC 5CT ApplicationSeamless steel tubes for oil casing and tubing in oil wells GradeJ55, 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)
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 655
N80
min 689
552-758
L80(13Cr)
552-655
max241HB
P110
min 862
758-965
Chemical Composition
Chemical Compositions (%)
C
Si
Mn
P
S
Cr
Ni
Cu
Mo
V
Al
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
(37Mn5)
0.34-0.38
1.45-1.70
0.11-0.16
(36 Mn2V)
0.15-0.22
max 1.00
0.25-1.00
max 0.010
12.0-14.0
0.26-0.35
0.17-0.37
0.40-0.70
0.80-1.10
0.15-0.25
max 0.08
(30CrMo)