Baotou Steel API 5CT K55 seamless casing is a popular OCTG solution for conventional oilfield development. Manufactured and tested in accordance with API 5CT, this casing provides dependable strength for wellbore support in shallow and medium-depth wells under normal service conditions.
We offer a complete size range of K55 casing with STC, LTC and BTC thread connections. Each pipe goes through strict NDT, hydrostatic test and dimension verification. Full MTC documents are provided to support tender and project acceptance for global oil & gas operators and EPC contractors.
- Casing, Tubing & Casing Pipe
Baotou Steel API 5CT K55 OCTG Casing Pipe
Email:
sales@imristeel.com
Phone:
+86 13646172523
Quote Now
Product Detail
Chemical Component
Related Products
Product Detail
Product Name:
Baotou Steel API 5CT K55 OCTG Casing Pipe
Standard:
API 5CT / API 5B
Grade:
K55
Thickness:
3.5-60mm
Shape:
Round
Outer Diameter:
Ф114.3 – 406 mm
Place of Origin:
Inner Mongolia, China
Usage:
Transportation of oil and gas
Surface Treatment:
Hot Rolled
Tolerance:
WT: -12.5% / +15%
End:
Plain
End Protector:
HDPE crash cap or customized
length:
R1, R2, R3
Brand:
Baotou steel
Delivery Time:
Normally within 30-45 days and according to the quantity.
Chemistry Component
| Grade | Type | C | Mn | Mo | Cr | Ni | Cu | P | S | Si | ||||
| Min | Max | Min | Max | Min | Max | Min | Max | Max | Max | Max | Max | Max | ||
| H40 | – | – | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – |
| J55 | – | – | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – |
| K55 | – | – | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – |
| N80 | 1 | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – | |
| N80 | Q | – | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – |
| R95 | – | – | 0.45 | – | 1.90 | – | – | – | – | – | – | 0.030 | 0.030 | 0.45 |
| L80 | 1 | – | 0.43 | – | 1.90 | – | – | – | – | 0.25 | 0.35 | 0.030 | 0.030 | 0.45 |
| L80 | – | – | 0.15 | 0.30 | 0.60 | 0.90 | 1.10 | 8.00 | 10.0 | 0.50 | 0.25 | 0.020 | 0.010 | 1.00 |
| L80 | 13Cr | 0.15 | 0.22 | 0.25 | 1.00 | – | – | 12.0 | 14.0 | 0.50 | 0.25 | 0.020 | 0.010 | 1.00 |
| C90 | 1 | – | 0.35 | – | 1.20 | 0.25 | 0.85 | – | 1.50 | 0.99 | – | 0.020 | 0.010 | – |
| T95 | 1 | – | 0.35 | – | 1.20 | 025 | 0.85 | 0.40 | 1.50 | 0.99 | – | 0.020 | 0.010 | – |
| C110 | – | – | 0.35 | – | 1.20 | 0.25 | 1.00 | 0.40 | 1.50 | 0.99 | – | 0.020 | 0.005 | – |
| P110 | – | – | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – |
| Q125 | 1 | – | 0.35 | – | 1.35 | – | 0.85 | – | 1.50 | 0.99 | – | 0.020 | 0.010 | – |
Mechanical Propert
| Grade | Type | Total under load Elongation % | Yield strength megapascal | Tensile strength megapascal | Hardness a, C Maximum | Specified OD mm | Allowable hardness Variation | ||
| Min | Max | Min | HRC | HBW | HRC | ||||
| H40 | – | 0.5 | 276 | 552 | 414 | – | – | – | – |
| J55 | – | 0.5 | 379 | 552 | 517 | – | – | – | – |
| K55 | – | 0.5 | 379 | 552 | 655 | – | – | – | – |
| N80 | 1 | 0.5 | 552 | 758 | 689 | – | – | – | – |
| N80 | Q | 0.5 | 552 | 758 | 689 | – | – | – | – |
| R95 | – | 0.5 | 655 | 758 | 724 | – | – | – | – |
| L80 | 1 | 0.5 | 552 | 655 | 655 | 23.0 | 241 | – | – |
| L80 | 3Cr | 0.5 | 552 | 655 | 655 | 23.0 | 241 | – | – |
| L80 | 9Cr | 0.5 | 552 | 655 | 655 | 23.0 | 241 | – | – |
| L80 | 13Cr | 0.5 | 552 | 655 | 655 | 23.0 | 241 | – | – |
|
C90 |
– |
0.5 |
621 |
724 |
689 |
25.4 |
255 | ≤12.70 | 3.0 |
| 12.71 to 19.04 | 4.0 | ||||||||
| 19.05 to 25.39 | 5.0 | ||||||||
| ≥25.40 | 6.0 | ||||||||
|
T95 |
– |
0.5 |
655 |
758 |
724 |
25.4 |
255 | ≤12.70 | 3.0 |
| 12.71 to 19.04 | 4.0 | ||||||||
| 19.05 to 25.39 | 5.0 | ||||||||
| ≥25.40 | 6.0 | ||||||||
|
C110 |
– |
0.7 |
758 |
828 |
793 |
29 |
279 | ≤12.70 | 3.0 |
| 12.71 to 19.04 | 4.0 | ||||||||
| 19.05o to 25.39 | 5.0 | ||||||||
| ≥25.40 | 6.0 | ||||||||
| P110 | – | 0.6 | 758 | 965 | 862 | – | – | – | – |
| Q125 | – | 0.65 | 862 | 1034 | 931 | b | – | ≤12.70 | 3.0 |
| 12.71 to 19.04 | 4.0 | ||||||||
| ≥19.05 | 5.0 | ||||||||
Color Discrimination
| Grade | Type | Straps for products longer than 1.8 meters Quantity and color | Coupling color | |
| The whole coupling | Brand | |||
| H40 | No belt or black belt, to be selected by the manufacturer | not have | Same as for the pipeline | |
| J55 | A sea of green | Bright green | One white | |
| K55 | Two emerald green | Bright green | not have | |
| N80 | 1 | One red | red | not have |
| N80 | Q | One is red, the other emerald green | red | green |
| R95 | One brown | brown | not have | |
| L80 | 1 | One red, one brown | red | One brown |
| L80 | 3Cr | One red and one white | red | One white |
| L80 | 9Cr | One red, one brown, two yellow | not have | Two yellows |
| L80 | 13Cr | One red, one brown and one yellow | not have | One yellow |
| C90 | A purple one | purple | not have | |
| T95 | One silver | silvery | not have | |
| C110 | One white, two brown | white | Two brown | |
| P110 | One white | white | not have | |
| Q125 | One orange | orange | not have | |
Related products
GB/T 5310-2017 Seamless Alloy Steel Pipe 12Cr1MoV
Read More 
UIC50 (50E1) Rail EN 13674 | Light-Medium Standard Gauge Steel Rail
Read More
35NiCrMoV12-5 Alloy Steel Tube
Read More
115RE AREMA Standard IS Grade Railway Rail
Read More
API 5CT LTC Thread N80Q Casing Tube
Read More
GB/T 8162 Q195 Braced Tube Structure
Read More
APL 5L X46 Oil and Gas Pipeline
Read More
API 5L X42N Pipeline with Anti-corrosion
Read More