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Advantages and disadvantages of spiral steel pipe
Advantages of spiral steel pipe: (1) Steel pipes of different diameters can be produced by using strip steel of the same width, especially steel pipes of large diameter can be produced by narrow strip steel. (2) Under the same pressure conditions, the stress of the spiral stee...Read more -
What is 3PE anti-corrosion steel pipe
As a terminal technical product of the steel pipe industry chain, anti-corrosion steel pipe has always occupied a very important position in the industry. In recent years, with the development and application of new anti-corrosion technologies for steel pipes, anti-corrosion s...Read more -
Classification of anti-corrosion steel pipes for natural gas
Classification of anti-corrosion steel pipes for natural gas 1. IPN8710 anti-corrosion When there are many kinds of corrosive media in the steel pipe, such as acid, alkali, salt, oxidant, and water vapor, the coating must be chemically inert and resistant to acid, alkali, and ...Read more -
The difference between galvanized steel pipe and plastic-coated steel pipe
1. Galvanized steel pipe to make the molten metal react with the iron matrix to produce an alloy layer so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. To remove the iron oxide on the surface of the steel pipe, after pickl...Read more -
Distinguishing method of welded steel pipe and seamless steel pipe
1. Metallographic method The metallographic method is the main method to distinguish welded steel pipes and seamless steel pipes. There is no welding material added to the high-frequency resistance welded steel pipe, so the weld seam in the welded steel pipe is very narrow, an...Read more -
What should be paid attention to when welding galvanized steel pipes
The welding of galvanized steel pipe should pay attention to: 1. Galvanized steel pipes with a pipe diameter greater than 100mm should be connected by flanges or ferrule-type special pipe fittings. 2. For the weld between galvanized steel pipe and flange, to ensure the welding...Read more -
Submerged arc steel pipe high-frequency welding process
Submerged arc steel pipe high-frequency welding process introduction: 1. The control of the weld gap: After rolling by multiple rollers, the strip steel is sent to the welded pipe unit. The strip steel is gradually rolled up to form a circular tube blank with an opening gap. A...Read more -
Technical characteristics of double-sided submerged arc welding spiral steel pipe
1. During the forming process of double-sided submerged arc welding spiral steel pipe, the deformation of the steel plate is uniform, the residual stress is small, and the surface does not produce scratches. Processed steel pipes have greater flexibility in the range of diamet...Read more -
How to prevent decarburization of steel pipes
Once decarburization occurs in the production process of the steel pipe, it will affect the subsequent process, and also reduce the high-quality performance and service life of the steel pipe itself, so manufacturers usually take appropriate measures to avoid or solve this pro...Read more