API 5CT Casing Pipe
API 5CT oil casing is mainly used to transport liquids and gases such as oil, natural gas, coal gas, water, etc.
API 5CT oil pipe is a piping specification for casing or pipe in industrial natural gas pipelines and tube wells. It is applicable to different product specification levels, including PSL1, 2 and 3, etc.
API 5CT pipes are available in a wide range of sizes, the outer diameter can be from 6mm to 219mm, the wall thickness can be from 1mm to 30mm, and the length can be up to 12000mm.
API 5CT casing is available in different steel grades, such as J55, K55, N80, L80 and P110, etc. These steel grades are mechanically oriented and have different properties such as strength, toughness and corrosion resistance.
API 5CT steel pipes also have different connection types, such as short round thread, non-thickened oil pipe, integral joint oil pipe, externally thickened oil pipe and extreme pipe casing, etc. These connection methods can meet different installation and use requirements.
During the welding process, the weld needs to be heat treated to a minimum temperature of 540°C (1000°F) to ensure that there is no untempered martensite structure in the weld. This can improve the strength and toughness of the weld and ensure the safety and reliability of the pipeline.
Chemical Composition of API 5CT Pipe
|
Grade |
C≤ |
Si≤ |
Mn≤ |
P≤ |
S≤ |
Cr≤ |
Ni≤ |
Cu≤ |
Mo≤ |
V≤ |
Als≤ |
|
0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
0.020 |
0.015 |
0.15 |
0.20 |
0.20 |
/ |
/ |
0.020 |
|
|
0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
0.020 |
0.015 |
0.15 |
0.20 |
0.20 |
/ |
/ |
0.020 |
|
|
0.15-0.22 |
1.00 |
0.25-1.00 |
0.020 |
0.010 |
12.0-14.0 |
0.20 |
0.20 |
/ |
/ |
0.020 |
|
|
0.26-035 |
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 |
Api 5ct Casing Pipe Specifications
Heat treatment methods for API 5CT casing and tubing:
For products that require heat treatment, full-body, full-length heat treatment is a very important step to ensure that the product has the required mechanical properties and corrosion resistance.
After heat treatment, the upsetting products need to be heat treated again to ensure that they achieve the required properties throughout their entire length. Separately heat-treated coupling blanks are also acceptable, depending on specific process requirements and product quality standards.
Normalizing is necessary if the final rolling temperature is higher than the upper critical temperature of the steel being treated and the pipe is air cooled. Normalizing is a heat treatment process in which metal is heated to a certain temperature, maintained for a period of time, and then cooled at an appropriate rate. It can refine grains and improve the mechanical properties and corrosion resistance of materials.
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FAQ
Q.Do you have MOQ?
A.Depends on different ideas, Can be negotiated.The larger the quantity is, the competitive the unit price will be.
Q.Do you have a quality control system?
A.Yes, we have our own quality control laboratory. Third party testing service is also available.
Q.What is API 5CT specification?
A.API 5CT is standard technical specifications for steel casing and tubing pipes used for oil wells in petroleum and natural gas industries.
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