The manufacturer of hf welded steel pipe mill line tells you about straight seam high-frequency welded steel pipes, which use high-frequency butt welding, including high-frequency contact welding and high-frequency induction welding, and the current frequency range is 350-450kHz. Its production process is simple, its production efficiency is high, its cost is low, and its development is relatively fast, so today we will mainly understand its production characteristics!

The manufacturer of hf welded steel pipe mill line tells you that because the energy is highly concentrated in the welding area, the welding edge of the tube is heated to the temperature required for welding in a short time (a few hundredths of a second to a few tenths of a second), and in high-speed welding There is no jump welding phenomenon, so a high welding speed can be obtained.
High-frequency resistance welding belongs to the category of pressure welding. No external filler metal is needed during welding, and problems such as chemical metallurgical reactions between welding materials and base metal metals are avoided. Therefore, it is suitable for a wide range of materials and is suitable for welding carbon steel, alloy steel, stainless steel, etc. welding of metal materials.
The manufacturer of hf welded steel pipe mill line tells you that because of the high welding speed and strong self-cooling effect of the workpiece, the size of the welding heat-affected zone is small, and oxidation is not easy to occur, and the weld can obtain better microstructure and properties.
The hf welded steel pipe mill line manufacturer tells you that straight seam high frequency welded steel pipe is made of rolled steel strip after cold deformation and then welded. It is better than seamless steel pipe in terms of wall thickness uniformity and surface quality, especially the size of the steel pipe The accuracy is far superior to seamless or submerged arc welded pipes. At the same time, due to the use of hot-rolled steel strips as raw materials, there are very few internal defects (such as cracks, inclusions, pores, etc.) in the pipe body, and it is used to replace seamless steel pipes in more and more applications.
The manufacturer of hf welded steel pipe mill line tells you that in the past ten years, through the improvement of the quality of hot-rolled steel strip, as well as the computer control of welding and heat treatment parameters and the improvement of the automation level of online detection, the reliability of straight seam high-frequency welded steel pipe has been greatly improved. for enhancement. At present, in the oil and natural gas industry, straight seam high-frequency welded steel pipes are widely used in long-distance pipelines, oil well casings and other fields.