In recent years, with the continuous upgrading of the welding process of large-diameter spiral steel pipes (SSAW), the processing quality and process performance will be significantly improved. Therefore, the quality of the factory will also have differences in grades. Among them, after the types of such pipes sold in the market continue to increase, there will be a very large gap in their quality. So, what exactly determines it?
Factor one: material grade.
Under normal circumstances, the materials used for the processing of large-diameter spiral steel pipes are divided into many grades. Each grade is different, and there are usually very large differences in quality. Therefore, to determine whether the quality is good or not, the manufacturer must present the corresponding material certificate, so that the level of the grade will be known. When compared in this way, it can be seen that the quality is not the same.
Factor two: workmanship quality.
Of course, when large-diameter spiral steel pipes are processed in different manufacturers, the equipment and technology introduced are different, and there will be a very large gap in the quality and craftsmanship of the factory. Therefore, in the process of comparison, it will be found that the quality of the craftsmanship sold by the manufacturer is higher in the market, and the recognition of customers will also be significantly improved. In general, it is necessary to reasonably grasp the quality requirements in this comparison, so that the quality gap can be judged.
Factor three: surface treatment.
When the large-diameter spiral steel pipe is processed, surface treatment is an indispensable process. To ensure that the quality of the steel pipe is strictly up to standard, it is necessary to be more rigorous in the surface treatment to ensure the appearance quality and corrosion resistance at the factory. , rust resistance and durability will become more and more prominent, so that the technical gap in each aspect will become larger and larger, and the choices for customers will still be different.
In general, the quality of large-diameter spiral steel pipes is relatively high, and these three factors cannot be ignored. Only after a comprehensive comparison can we know the quality.