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Specifications
mild steel casing1.Standard:BS GB JIS ASME ANSI ASTM
2.OD:27-508mm
3.WT:2-50mm
4.Length:R1/R2/R3
seamless steel pipe used as casing
mild steel casing
1.Technical Data
Standard |
API 5CT |
Material |
APIJ55 K55 N80 L80 P110 C95 |
OD |
4 1/2''~13 3/8'' 30~508`'mm |
WT |
SCH5,SCH10,SCH20,SCH40,SCH60,SCH80,SCH100,SCH120,SCH160,XXS 2~30mm |
Usage |
Structure Use,water transport,Building,Machinery,Traffic,Aviation,Oil development ect. |
OD Tollerance |
D<50mm,+-0.5mm ,D>50MM,+-1% |
WT Tollerance |
WT +-12.5% |
Chemical |
C:0.17-0.24%,Si:0.17-0.37%,MN:0.35-0.65%,P:<0.035%,S:<0.035%,Cu:<0.25%,Ni<0.25%,Cr:<0.25% |
Tensile strength |
390MPA |
Yield Point |
WT<16MM 245MPA, WT >16-30MM 235MPA |
Elongation |
20% |
Rigidity |
≤241HB |
Length |
2-12m Random,5.8M FIXED,6M FIXED,9M FIXED |
Suface |
Black paint as rusty protect |
Ends |
2"below plain ends,2" above beveled ends |
Method |
140mm below cold drawn,140mm above hot rolled,273mm above hot expand |
Packing |
6 steel strip,bundles,Caps , plastic wrap,loading belt oras per clients requirements |
1 Certificated: ISO9001,API certification of the USA
2 OEM: Not required
3 Connection Welded and Thread: BTC,LTC,STC thread and coupling can be required
4 Product Range: API5CT oil casing pipe,Seamless steel tube,
5 Export Market:Europe/North America/the Middle East/Afric/Asia and other countries or regions
6 Other service: special specifications are also supplied according to customer's requirements
2.Size Tolerances
| Standard | OD Tolerance | WT Tolerance | |
| API 5CT | D ≤ 101.6mm | +_0.79mm | -12.5% |
| D ≥ 114.3mm | +1%-0.5% | -12.5% | |
3.Mechanical properties
| Standard | Steel | Tensile strength (Mpa) | Yield Strength(mpa) | Elongation9%) | |
| Min | Max | ||||
| API5CT | J55 | 517 | 379 | 552 | As per table |
| K55 | 655 | 379 | 552 | As per table | |
| N80 | 689 | 552 | 758 | As per table | |
| L80 | 655 | 552 | 655 | As per table | |
| P110 | 862 | 758 | 965 | As per table | |
4.Chemical Composition: (%):
| Standard | steel | C | Si | Mn | P≤ | S≤ | Cu≤ | Ni≤ | Cr≤ | Mo≤ | V≤ |
| API 5CT |
J55 (37Mn5) |
0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.20 | 0.20 | 0.15 | ⁄ | ⁄ |
|
K55 (37Mn5) |
0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 |
0.015 | 0.20 | 0.20 | 0.15 | ⁄ | ⁄ | |
|
N80 (36 Mn2V) |
0.34-0.38 | 0.20-0.35 | 1.45-1.70 | 0.020 | 0.015 | 0.20 | 0.20 | 0.15 | ⁄ | 0.11-0.16 | |
|
L80 (13Cr) |
0.15-0.22 | 1.00 | 0.25-1.00 | 0.020 | 0.010 | 0.20 | 0.20 | 12-14 | ⁄ | ⁄ | |
| P110(30CrMo) | 0.26-0.35 | 0.17-0.37 | 0.40-0.70 | 0.020 | 0.010 | 0.20 | 0.20 | 0.8-1.1 | 0.15-0.25 | 0.08 |
5.Datails of API 5CT Oil Casing Pipe
| Nominal Size | OD(Outside Diameter) | Weight (lb/ft) | Wall Thickness | Type Of End Finish | |||||||
| Grade | |||||||||||
| In. | mm | T&C | In. | mm | J55 K55 | L80 C95 | N80-1 N80-Q | C95 T95 | P110 | Q125 | |
| 4 1/2" | 4.500 | 114.30 | 11.60 | 0.250 | 6.35 | SLB | LB | LB | LB | LB | |
| 13.50 | 0.290 | 7.37 | LB | LB | LB | LB | |||||
| 15.10 | 0.337 | 8.56 | LB | LB | |||||||
| 5" | 5.000 | 127.00 | 15.00 | 0.296 | 7.52 | SLB | LB | LB | LB | LB | |
| 18.00 | 0.362 | 9.19 | LB | LB | LB | LB | LB | ||||
| 21.40 | 0.437 | 11.10 | LB | LB | LB | LB | LB | ||||
| 5 1/2" | 5.500 | 139.70 | 17.00 | 0.304 | 7.72 | SLB | LB | LB | LB | LB | |
| 20.00 | 0.361 | 9.17 | LB | LB | LB | LB | |||||
| 23.00 | 0.415 | 10.54 | LB | LB | LB | LB | LB | ||||
| 6 5/8" | 6.625 | 168.28 | 24.00 | 0.352 | 8.94 | SLB | LB | LB | LB | LB | |
| 28.00 | 0.417 | 10.59 | LB | LB | LB | LB | |||||
| 32.00 | 0.475 | 12.06 | LB | LB | LB | LB | LB | ||||
| 7" | 7.000 | 177.80 | 23.00 | 0.317 | 8.05 | SLB | LB | LB | LB | ||
| 26.00 | 0.362 | 9.19 | SLB | LB | LB | LB | LB | ||||
| 29.00 | 0.408 | 10.36 | LB | LB | LB | LB | |||||
| 32.00 | 0.453 | 11.51 | LB | LB | LB | LB | |||||
| 7 5/8" | 7.625 | 193.68 | 26.40 | 0.328 | 8.33 | SLB | LB | LB | LB | LB | |
| 29.70 | 0.375 | 9.53 | LB | LB | LB | LB | |||||
| 33.70 | 0.430 | 10.92 | LB | LB | LB | LB | |||||
| 39.00 | 0.500 | 12.70 | LB | LB | LB | LB | LB | ||||
| 8 5/8" | 8.625 | 219.08 | 36.00 | 0.400 | 10.16 | SLB | LB | LB | LB | SLB | |
| 40.00 | 0.450 | 11.43 | LB | LB | LB | LB | |||||
| 44.00 | 0.500 | 12.70 | LB | LB | LB | LB | |||||
| 9 5/8" | 9.625 | 244.48 | 40.00 | 0.395 | 10.03 | SLB | LB | LB | LB | ||
| 43.50 | 0.435 | 11.05 | LB | LB | LB | LB | |||||
| 47.00 | 0.472 | 11.99 | LB | LB | LB | LB | LB | ||||
| 10 3/4" | 10.75 | 273.05 | 51.00 | 0.450 | 11.43 | SB | SB | SB | SB | SB | |
| 55.50 | 0.495 | 12.57 | SB | SB | SB | SB | |||||
| 11 3/4" | 11.75 | 298.45 | 60.00 | 0.489 | 12.42 | SB | SB | SB | SB | SB | SB |
| 13 3/8" | 13.375 | 339.73 | 68.00 | 0.480 | 12.19 | SB | SB | SB | SB | SB | |
| 72.00 | 0.514 | 13.06 | SB | SB | SB | SB | SB | ||||
| 16” | 16 | 406.40 | 75.00 | 0.438 | 11.13 | SB | |||||
| 84.00 | 0.4958 | 12.57 | SB | ||||||||
| 18 5/8” | 18.625 | 473.08 | 87.50 | 0.435 | 11.05 | SB | |||||
| 20” | 20 | 508.00 | 94.00 | 0.438 | 11.13 | SLB | |||||
| 106.50 | 0.500 | 12.70 | SLB | ||||||||
| 133.00 | |||||||||||
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