The difference between Q235B steel pipe and No. 20 steel seamless steel pipe.
With the rapid development of modern industry, steel pipes are more and more widely used in various fields. Among them, Q235B steel pipe and No. 20 steel seamless steel pipe are the two most common steel pipes, and there are certain differences in their materials, uses, and properties. This article will make a detailed comparison of these two types of steel pipes in order to better understand their characteristics and uses.
First, the material. Q235B steel pipe is a low-carbon carbon structural steel with a yield strength of 235MPa, which has good plasticity and toughness. This kind of steel pipe is mainly used to manufacture structural parts such as buildings, bridges, ships, vehicles, etc., and can also be used to manufacture various mechanical parts.
No. 20 steel seamless steel pipe is a high-quality carbon structural steel with a carbon content of 02%, with high strength and hardness. This kind of steel pipe is mainly used in the manufacture of high-pressure pipelines, petrochemical equipment, boilers and other occasions with high pressure, high temperature and high corrosiveness.
Second, the use. Due to its good plasticity and toughness, Q235B steel pipe is mainly used in occasions with low force and good toughness, such as building structures, bridges, vehicles, etc. At the same time, due to its relatively low level, it is also widely used in some cost-sensitive occasions.
No. 20 steel seamless steel pipes are mainly used in occasions with high requirements for strength and corrosion resistance, such as petrochemical pipelines, boilers, high-pressure vessels, etc. Due to its high strength and hardness, this steel pipe is able to withstand higher pressures and temperatures, as well as better corrosion resistance.
3. Performance. The mechanical properties of Q235B steel pipe mainly include tensile strength, yield strength, elongation and impact toughness. These performance indicators are relatively low, but they can meet the requirements of general engineering structures. In addition, the welding performance of Q235B steel pipe is good, and it is easy to process and connect.
The mechanical properties of No. 20 steel seamless steel pipe mainly include tensile strength, yield strength, elongation and impact toughness. Due to the characteristics of high-quality carbon structural steel, these performance indicators are relatively high and can meet the requirements of high strength and high corrosion resistance. In addition, the corrosion resistance of No. 20 steel seamless steel pipe is also good, and it can be used for a long time in some highly corrosive environments.
Fourth, the process. The production process of Q235B steel pipe is relatively simple, and it is mainly produced by hot rolling or cold drawing process. This kind of steel pipe has a higher process maturity, higher production efficiency and lower cost.
The production process of No. 20 steel seamless steel pipe is relatively complex, and it needs to go through multiple processes to complete the production. Due to its high strength and high hardness, precise control of various process parameters is required in the production process to ensure the performance and quality of steel pipes. Although the production cost is higher, this kind of steel pipe has high added value and can meet the needs of some high-end customers.
To sum up, there are certain differences between Q235B steel pipe and No. 20 steel seamless steel pipe in terms of material, use, performance and process. In practical applications, it is necessary to select the right type of steel pipe according to the specific needs and occasions. At the same time, for some special-purpose and high-demand application scenarios, customized production and processing are also required to meet the individual needs of customers.