The installation and use of the spiral steel pipe has strict technical requirements. It should be carried out according to the actual situation, and it must also be guaranteed and quality according to the operating program. In the process of using spiral steel pipes, you need to pay attention to the following points:
1. The installation of the spiral steel pipe is designed according to the drawing, according to the prefabricated pipeline bracket at the scene, and then rushing according to the design and site, then polished the groove with a polishing machine, and then welded. The deviation of the vertical installation of the vertical installation of the use of the quality requirements should be less than 3 mm per meter, and the horizontal installation deviation should be less than 1 mm. The branch tube shall not be welded at the weld, and welding should be avoided at the curve.
2. The construction preparation pipeline groove before the use of the spiral steel pipe should be dug. The pipes should be built well. Various spiral steel pipes needed, and all kinds of tools required, including welding machines, cutting machines, electric hammers, polishing machines, etc., all must be, all must be. Be prepared for full preparation. Only by doing a series of preparations can we start installation.
3. Regarding surface mechanical injury, usually use the method of adding a sleeve to repair. The sleeve consists of two pieces. The two vertical welds are welded by two pieces of strips. Its advantage is that there is no welding seam on the body of the steel pipe. The longitudinal seam is the docking weld with a lining plate, and the tube itself becomes the lining plate of the upper and lower sets. No matter which method is selected, the set must be hugged on the steel pipe.
4. Welding is straight, the weld is completely, and the surface of the weld is not burned and cracking. When the scratch is not formed, the two ring -shaped corner welds between the sleeve and the steel pipe body do not need to be welded. If the leakage is leaked, it needs to be welded. In the case, the thickness of the set of simplifications is usually not lower than the tube wall thickness.
