Seamless Casing Pipes for Oil Well

Specification: API 5CT
Material: J55, K55, N80, L80, P110
Application: casing for wellbore and seamless steel pipes for well casing

Steel Series Chemical Composition Mechanical Properties
C Mn Mo Cr Ni Cu P S Si Yield Strength (MPa) Tensile Strength (MPa) Hardness
Min. Max. Min. Max. Min. Max. Min. Max. Max. Max. Max. Max. Max. Min. Max. Min. HRC HBW/HBC
H40 / / / / / / / / / / / 0.030 0.030 / 276 552 414 / /
J55 / / / / / / / / / / / 0.030 0.030 / 379 552 517 / /
K55 / / / / / / / / / / / 0.030 0.030 / 379 552 655 / /
N80 1 / / / / / / / / / / 0.030 0.030 / 552 758 689 / /
0 / / / / / / / / / / 0.030 0.030 / 552 758 689 / /
M65 / / / / / / / / / / / 0.030 0.030 / 448 586 586 22 235
L80 1 / 0.43 / 1.90 / / / / 0.25 0.35 0.030 0.030 0.45 552 655 655 23 241
9Cr / 0.15 0.30 0.60 0.90 1.10 8.0 10.00 0.50 0.25 0.020 0.010 1.00 552 655 655 23 241
13Cr 0.15 0.22 0.25 1.00 / / 12.0 14.00 0.50 0.25 0.020 0.010 1.00 552 655 655 23 241
C90 1 / 0.35 / 1.00 0.25 0.75 / 1.20 0.99 / 0.020 0.010 / 621 724 689 25.4 255
2 / 0.50 / 1.90 / NL / NL 0.99 / 0.030 0.010 / 621 724 689 25.4 255
T95 1 / 0.35 / 1.20 0.25 0.85 0.40 1.50 0.99 / 0.020 0.010 / 655 758 724 25.4 255
2 / 0.50 / 1.90 / / / / 0.99 / 0.030 0.010 / 655 758 724 25.4 255
P110 / / / / / / / / /. / / 0.030 0.030 / 758 965 862 /