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API SPEC 5CT H40 J55 K55 M65 N80-1 N80Q R95 L80-1 C90-1 T95-1 C110 P110 Q125-1 material Oil steel Casing Tube Pipe
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China Mainland
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API SPEC 5CT H40 J55 K55 M65 N80-1 N80Q R95 L80-1 C90-1 T95-1 C110 P110 Q125-1 material Oil steel Casing Tube Pipe
Description:
Standard: API 5CT.
Applications: Used for oil casing and tubing in oil wells.
Available steel grades: H40 J55 K55 M65 N80-1 N80Q R95 L80-1 C90-1 T95-1 C110 P110 Q125-1.
Specifications: O.D.: 6.0~1200mm; W.T.: 1~150mm; L: 5.8m; 11.8m; 12m or above. Modified specifications according to customer requirements.
Technology: Hot Rolled, Cold Drawn & Cold Rolled.
Dimension Tolerance:
Types of steel tubes | Outer Diameter | Wall Thickness | |
Cold-rolled tubes | Tube sizes(mm) | Tolerances(mm) | Tolerances(mm) |
<114.3 | ±0.79 | -12.5% | |
=114.3 | -0.5+1% | ||
Mechanical Properties:
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 |
Chemical Composition:
Standard codes | Models of steel tubes | Chemical compositions(%) | ||||||||||
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 | |
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