With the continuous development of the industry, steel pipes, as an important metal material, have a wide range of applications in various fields. Steel pipes have the advantages of high strength, corrosion resistance, high temperature resistance, etc., and are widely used in petroleum, chemical, electric power, construction and other industries. 20g steel pipe is a common seamless steel pipe, which is widely used in various fields because of its excellent mechanical properties and corrosion resistance. This article will introduce the characteristics, applications and production processes of 20g steel pipes in detail.
1. Characteristics of 20g steel pipe.
The 20g steel pipe is a low-carbon steel pipe, and its metallographic structure is ferrite plus a small amount of pearlite, which has the advantages of high strength, high toughness, low cold brittleness and easy welding. Compared with ordinary steel pipes, 20g steel pipes have higher strength and toughness, stronger corrosion resistance, and can meet the needs of different fields. In addition, the 20g steel pipe also has good high temperature resistance, which can be used for a long time in a high-temperature environment and is not easy to deform and damage.
Second, the application of 20g steel pipe.
Due to its excellent mechanical properties and corrosion resistance, 20g steel pipes are widely used in various fields. In the petrochemical industry, 20g steel pipes can be used to manufacture pipelines, reactors, storage tanks and other equipment for transporting petroleum, chemical raw materials and other media. In the power industry, 20g steel pipes can be used to manufacture components of boilers, steam turbines, generators and other equipment to improve the reliability and stability of equipment. In the construction industry, 20g steel pipes can be used to manufacture steel structure components for high-rise buildings, bridges, subways and other projects to improve the safety and durability of buildings.
3. Production process of 20g steel pipe.
The production process of 20g steel pipe mainly includes the following steps:
1.Ingot smelting: The raw material is smelted into steel ingots to remove impurities and harmful elements in it to ensure the quality and performance of the steel.
2.Ingot rolling: The melted ingots are rolled into tube blanks, ready for subsequent piercing and rolling.
3.Perforation: The tube blank is perforated into a capillary tube for subsequent rolling and processing.
4.Hot rolling: The perforated capillary is hot-rolled to make the size and shape of the steel pipe meet the requirements.
5.Cold rolling: Cold rolling of the hot-rolled steel pipe to further improve the accuracy and surface quality of the steel pipe.
6.Annealing: annealing the cold-rolled steel pipe to eliminate internal stress and improve the toughness and plasticity of the steel pipe.
7.Pickling: Pickling is carried out on the annealed steel pipe to remove the oxide scale and impurities on the surface and ensure the surface quality of the steel pipe.
8.Coating: The pickled steel pipe is coated to improve the corrosion resistance and service life of the steel pipe.
9.Inspection and packaging: Carry out quality inspection and packaging on the coated steel pipe to ensure the quality and safety performance of the product.
IV. Conclusions. As a common seamless steel pipe, 20g steel pipe is widely used in various fields because of its excellent mechanical properties and corrosion resistance. Understanding the characteristics, applications and production processes of 20g steel pipes will help to better select and use this material, and also provide strong support for the development of related industries. In the future, with the continuous development of science and technology, the application prospect of 20g steel pipe will be broader.