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Technical requirements and processing methods of straight seam welded steel pipes
First, technical requirements of straight seam welded steel pipes: Technical requirements and inspection of straight seam welded steel pipes According to the provisions of GB3092 “Welded steel pipes for low-pressure fluid transportation”, the nominal diameter of we...Read more -
What should be done when the cooling of large-diameter steel pipes is completed
(1) When the cooling is completed, that is, when the temperature of the surface and the core is completely the same, the elastic deformation of the surface and the core also disappears and returns to the original state. Although instantaneous thermal stress is generated during...Read more -
Correct operation and acceptance method of straight seam steel pipe
At present, there are more and more types of straight seam steel pipes. With the rapid development of strip steel continuous rolling production and the advancement of welding and inspection technology, the welds are constantly improving, the varieties and specifications of wel...Read more -
Two possibilities for the formation of surface defects of spiral steel pipes
There are two possibilities for the formation of surface defects of spiral steel pipes: one is that the material itself is not plastic enough during the deformation process, resulting in cracks and external folds; the other is that the surface oxidation of the material causes ...Read more -
Inspection standards and welding control issues of thick-walled steel pipes
Through observation, it is not difficult to find that all thick-walled steel pipes, hot-expanded pipes, etc. are produced with strip steel as the production material. The pipes obtained by thick-walled welding on high-frequency welding equipment are called thick-walled steel p...Read more -
About the characteristics and uses of the industrial straight seam steel pipes
First, the characteristics of straight seam steel pipes: Straight seam steel pipes generally refer to the use of special processes to treat ordinary steel pipes, so that the steel pipes have excellent anti-corrosion capabilities. They are generally used for waterproofing, rust...Read more -
Thermal deformation and microstructure evolution of thick-walled welded steel pipes
First, thermal deformation and microstructure evolution of thick-walled welded steel pipes: Thick-walled welded steel pipes are a precipitation-strengthened nickel-based high-temperature alloy that is difficult to deform. They are similar in composition to the former Soviet Un...Read more -
Implementation standards and technological progress of straight seam steel pipes
Welded steel pipes, also known as welded pipes, are steel pipes made by welding steel plates or steel strips after curling and forming. The production process of welded steel pipes is simple, the production efficiency is high, the varieties and specifications are many, and the...Read more -
Reasons for sand eyes at the weld of spiral seam submerged arc welded steel pipe
Spiral steel pipe is made by bending the strip steel in a spiral direction through a coiling machine and then welding it through a capacitor double-sided submerged arc. In the process of spiral steel pipe welding production, many galvanized channel steel situations such as lea...Read more