Cold-rolled round steel pipes https://ukrstarline.ua/ru/chernyj-metalloprokat/stalnaya-truba/stalnaya-truba-holodnokatanaya-kruglaya are manufactured on rolling mills without heating to high temperatures. The production is guided by state standards (GOST), which ensures the manufacture of quality products. Durable and reliable seamless steel pipes are used in construction, oil and gas industry, power engineering, mechanical engineering and other areas.
Types of cold-rolled steel round pipes
Cold rolled seamless steel seamless round steel pipes are of the greatest use. Their types are distinguished by:
- External diameter: from 6 to 250 mm. There are many spheres of human activity, where pipes of each diameter find application.
- Internal diameter. It is rounded to standard values in millimeters or inches, called the nominal bore, denoted Du, DN. The indicator is important for the selection of fittings, shut-off valves of pipelines.
- Wall thickness.Thin-walled are used in areas where less weight is important, and strength is secondary. Thick-walled are used in areas where they are subjected to high mechanical loads and high pressure.
- Steel grade. For production mainly use unalloyed steel grade St. The index in the marking indicates the percentage of carbon content. The more it is, the more durable, hard, elastic pipes.
- Special properties. Heat-resistant seamless steel pipes: used in furnaces and boilers. Corrosion-resistant - for work in aggressive environments.
- Designation: for work in conditions of high pressure and temperature, for mechanical engineering, aviation and automotive industry, laying gas and oil pipelines.
Cold-rolled steel pipes of each type are characterized by specific characteristics, scope of application. This variety guarantees the choice of the best option for specific needs.
Advantages of using seamless cold-rolled pipes
Due to a variety of advantages, cold-rolled steel pipes are used in various industries and in everyday life. Among the advantages stand out:
- Resistance to deformation due to cold rolling.
- Strength due to the absence of welds.
- Precise geometry, which facilitates installation.
- Smooth clean surface that facilitates additional processing: painting, insulation, etc.
- Rigidity, resistance to bending and mechanical impact.
- Ability to withstand high pressure.
- Variety of sizes, which expands the areas of their application.
- High reliability, which allows the pipes to be used in oil and gas pipelines, heat exchangers.
- Durability, reducing the frequency and cost of repairs.
- Easy to cut, drill, bend, weld and apply other types of processing necessary for installation.
Seamless cold rolled pipes increase the reliability and durability of pipelines and other structures, improve their performance, reduce maintenance and repair costs.
How to choose the right cold rolled seamless pipe
In order for cold rolled seamless pipe to meet the requirements of a particular application, it should be selected by taking into account the factors:
- Technical requirements. Determine what you plan to use the pipe for: pumping liquids, gases, making structures, mechanisms, parts, etc.
- Conditions of application. Take into account the pressure, temperature at work, physical load, aggressiveness of the environment and other points.
- Dimensions. Select pipe outside diameter, nominal bore depending on the anticipated volume and speed of liquid or gas transportation.
- Wall thickness. Considering the internal pressure and external loads.
- Pipe length. Select based on the project and installation conditions.
- Compliance with standards. Check manufacturer's certifications to confirm that materials and techniques meet standards.
- Mechanical Properties. Ensure that the pipe strength is adequate to meet the requirements (yield strength, tensile strength, relative elongation). Under low temperature or impact loading conditions, toughness values are particularly important.
- Cost. Compare the prices of different manufacturers. Consider, in addition to the cost of the pipe, convenience and transportation costs. Prefer pipe from trusted manufacturers with good reputations, even if the cost is higher.
If necessary, engage engineers or consultants who specialize in piping systems to help you select the best pipes for your conditions.
Conclusion
Seamless cold rolled steel pipes, manufactured according to GOST, provide reliable and long-term operation of structures or pipelines from them. The variety of types allows you to choose the best option, taking into account the operating conditions.