API 5CT K55 oil casing pipe consist of relatively low steel grade, which is similar to the J55 grade other API 5CT standard petroleum casing pipes.
It can be manufactured both seamless and electric welding process. J55 is available with heat treatment methods as full product body or full length of normalization, normalization plus tempering, or quenching plus tempering.
API 5CT K55 Casing Tubing is a API 5CT Oil Casing Pipe & mainly used for oil well drilling. We manufacture API 5CT K55 Casing Tubing in accordance with the SY/T6194-96 standard, it is available as short thread type and long thread type supplied with their couplings.
According to American Petroleum Institute Standard API SPEC 5CT1988 1st edition, the steel grade of API 5CT oil casing pipe can be divided into ten types, including H-40, J-55, K-55, N-80, C-75, L-80, C-90, C-95, P-110 and Q-125. We supply the casing pipe & API 5CT K55 Casing Tubing accompanied with thread and coupling, or we offer our product in accordance with the following forms for option.
Specifications API 5CT K55 Casing Tubing
| Material: | K55, steel grade |
| Outer Diameter: | 4 1/2″-20″, (114.3-508mm) |
| Wall Thickness: | 5.12-16.13mm |
| Form of Thread: | Buttress thread casing, Long round thread casing, Short round thread casing |
| Function: | It can protect the tubing pipe. |
Chemical Composition(%) of API 5CT
| Grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≤ | Ni≤ | Cu≤ | Mo≤ | V≤ | Als≤ |
| API 5CT K55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.15 | 0.20 | 0.20 | / | / | 0.020 |
Mechanical Properties of API 5CT
| Steel Grade | Yield Strength (Mpa) | Tensile Strength (Mpa) |
| API 5CT K55 | ≥655 | ≥517 |
API 5CT K55 oil casing pipe contains the sulfur and phosphorus contents of respectively less than 0.030%. Its chemical and physical properties are basically similar to J55. However, our product claims higher tensile strength than the J55 type. The minimum value is 95ksi.
Same as J55 type product, there is also a green bar sprayed on our API 5CT K55 oil casing pipe.. The difference is that the coupling of J55 has an extra white bar. API 5CT K55 mainly serves to protect the wall of a well and prevent the oil and gas from leakage. Coating on its surface provides extra protection against the corrosion.
As well as we are a specialized API 5CT K55 oil casing pipe supplier across the world, CTC also provides API 5CT oil casing pipe, API 5L seamless steel pipe, API 5CT oilfield tubing, and more.
