The straight welded pipe is one of the welded pipes. Welded steel pipe refers to cutting steel strips with steel strips, and then processing them into tubes by grinding tools. Finally, a pipe seam is welded with a welding machine. Before introducing the inspection method and application of the longitudinal welded pipe, let's briefly talk about the types and applications of welded steel pipes.
If the welded pipe can be divided into straight welded pipe and spiral welded pipe in the form of weld, it can be divided into general welding pipe, galvanized pipe, automobile pipe, spiral welded pipe and so on. In addition, it can be classified according to the shape of welded pipe. For the simple section steel pipe and the complex section steel pipe, the simple section steel pipe has the square tube, the circular pipe and so on, the complex section contains the hexagonal steel pipe, the double convex steel tube and so on.
The inspection method of Ji'nan galvanized pipe mainly adopts physical examination. Some physical phenomena are used to check whether the welded pipe can meet the requirements. Then the magnetic test can be used, but the magnetic test can only be used to test the defects of the surface and the near surface of the welded pipe; the permeability test can be used to test the defects of the surface of the magnetic and nonmagnetic materials; the ray flaw detection method is mainly used to detect the defects in the welded pipe or not.
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