API 5CT Casing & Tubing
Mechanical properties:
Standard |
Grade |
Tensile Strength(MPa) |
Yield Strength(MPa) |
API SPEC 5CT |
J55 |
≥517 |
379~552 |
K55 |
≥517 |
≥655 |
|
N80 |
≥689 |
552~758 |
|
L80(13Cr) |
≥655 |
552~655 |
|
P110 |
≥862 |
758~965 |
Chemical Composition:
Standard |
grade |
Chemical Composition(%) |
||||||||||
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
Als |
||
API SPEC 5CT |
J55K55 (37Mn5) |
0.34~0.39 |
0.20~0.35 |
1.25~1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
/ |
/ |
≤0.020 |
N80 (36 Mn2V) |
0.34~0.38 |
0.20~0.35 |
1.45~1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
/ |
/ |
/ |
0.11~0.16 |
≤0.020 |
|
L80(13Cr) |
0.15~0.22 |
≤1.00 |
0.25~1.00 |
≤0.020 |
≤0.010 |
12.0~14.0 |
≤0.20 |
≤0.20 |
/ |
/ |
≤0.020 |
|
P110 (30CrMo) |
0.26~0.35 |
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 |
Dimensional Deviation:
Dimensional Deviation |
||
Items |
Allowable Deviation |
|
Out Diameter |
Pipe Body |
D≤101.60mm±0.79mm |
D≥114.30mm +1.0% |
||
-0.5% |
||
|
|
|
Wall Thickness |
-12.5% |
|
Weight |
Each Piece |
+6.5% |
+3.5% |
Length Range
Length |
|||
Item |
Scope 1 |
Scope 2 |
Scope 3 |
Tubing |
6.10-7.32m |
8.53-9.75m |
- |
Casing |
4.88-7.62m |
7.62-10.36m |
10.36-14.63m |