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Precautions for handling and storing stainless steel pipes at the construction site
After the thin-walled stainless steel pipes are packed and bundled, they should be stored in a dry and clean environment without corrosive gas, and should not be piled up with other items. Because the surface of stainless steel is relatively smooth and bright, and it is also a...Read more -
Straight seam steel pipe procurement method and processing method
Procurement method of straight seam steel pipe: 1. Purchasing needs to know the type of steel pipe 1) By type: straight seam steel pipe, seamless steel pipe, spiral steel pipe, etc. 2) Section shape classification of straight seam steel pipe classification: square pipe, rectan...Read more -
The purpose of preheating the steel pipe before welding the spiral steel pipe
Critical components of alloy steel and thick parts must be preheated before welding. The purpose of preheating the spiral steel pipe before welding is as follows: (1) Preheating can slow down the cooling rate after welding, make hydrogen diffuse in the weld metal and escape, a...Read more -
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