Thermal expansion seamless steel pipe is a seamless steel pipe made by thermal expansion process, and its manufacturing process is to heat the steel plate and expand the diameter to make it a seamless steel pipe. This kind of steel pipe has high strength and corrosion resistance, and is widely used in petroleum, chemical industry, electric power, construction and other fields.
The size of a thermally expanded seamless steel pipe can be measured by its outer diameter and wall thickness. Among them, the outer diameter is the maximum diameter of the steel pipe, and the wall thickness determines the strength and pressure resistance of the steel pipe. The maximum specification of hot-expanded seamless steel pipe depends on the manufacturing process and equipment capacity, and the common maximum specification is 630mm outer diameter and 10mm wall thickness.
The manufacture of thermally expanded seamless steel pipes requires a number of processes, including plate cutting, heating, sizing, sizing, cooling, and straightening. Among them, heating and diameter expansion are key processes, and the temperature and pressure need to be strictly controlled to ensure the quality and performance of the steel pipe. At the same time, it is also necessary to pay attention to prevent cracks, slag inclusions, porosity and other problems in the steel pipe during the manufacturing process.
The quality and performance of hot-expanded seamless steel pipes are affected by a variety of factors, such as raw material quality, manufacturing process, equipment accuracy, etc. Therefore, enterprises that manufacture hot-expanded seamless steel pipes need to have a high level of technology and quality control capabilities to ensure the quality and performance of products.
In general, the maximum specification of thermally expanded seamless steel pipe depends on the manufacturing process and equipment capacity, and the current common maximum specification is 630mm outer diameter and 10mm wall thickness. This kind of steel pipe has high strength and corrosion resistance, and is widely used in many fields. The manufacture of hot-expanded seamless steel pipes needs to go through multiple processes, and parameters such as temperature and pressure need to be strictly controlled to ensure the quality and performance of the product. At the same time, manufacturing enterprises need to have a high level of technology and quality control capabilities.