Are you often unable to distinguish between cold rolled seamless steel tubes and hot rolled seamless steel tubes?Explore the differences today with this post!
1.The production process is different
The production process of cold rolled seamless steel pipe and hot rolled seamless steel pipe is different, which is also their biggest difference. Cold rolled seamless steel pipe is made by heating the steel billet to the appropriate temperature and then carrying out a number of processes such as piercing, drawing, etc. It is processed in a cold rolling mill, and finally formed into a steel pipe of the required size and shape. While the hot rolled seamless steel pipe is made by heating the billet to a higher temperature and carrying out a series of processing procedures such as piercing, rolling and pressing.
2. Mechanical properties are different
Cold rolled seamless steel pipe and hot rolled seamless steel pipe mechanical properties are also significantly different. Cold rolled seamless steel pipe has a high degree of precision and finish, pressure resistance, bending resistance is better, but the toughness and impact is worse; and hot rolled seamless steel pipe due to the processing temperature is high, the internal pressure is greater, prone to defects, the mechanical properties of the poorer, but the toughness and impact is better than the cold rolled seamless steel pipe.
3. Different appearance quality
From the point of view of appearance quality, cold rolled seamless steel pipe is more superior than hot rolled seamless steel pipe. Because the production process of cold rolled seamless steel pipe is more precise, and the processing temperature of hot rolled seamless steel pipe is higher, there is a certain impact on the surface quality. Cold rolled seamless steel pipe surface clean, high dimensional accuracy, while hot rolled seamless steel pipe there are burrs, oxide skin and other surface defects.
4. Different application scenarios
The application scenes of cold rolled seamless steel pipe and hot rolled seamless steel pipe are also different. Due to the better mechanical properties of cold rolled seamless steel pipe and high quality appearance, it is suitable for high-precision, high-demand fields, such as aviation, automotive and machining industries. On the other hand, hot rolled seamless steel pipe is suitable for some occasions that do not require high mechanical properties and appearance quality due to low production cost.
To sum up, cold rolled seamless steel pipe and hot rolled seamless steel pipe are two commonly used types of steel pipe, which are different in production process, mechanical properties, surface quality and applicable scenarios. According to different needs and requirements, choose the type of steel pipe that suits you, in order to give better play to its advantages and bring better results for your work.
Post time: Nov-15-2023