The stainless steel pipe fittings that we often see or hear are already the norm in life. There are only a few different names. Except for the plastic PPR pipe fittings, they are all stainless steel pipe fittings. From the inside of the industry, what are the subdivisions?
At the beginning, stainless steel pipe fittings included high-pressure pipe fittings used in industry, also called industrial pipe fittings. This kind of surface doesn't need to be spicy, and many of them are used outdoors, so in comparison, the production process is much simpler. After buying a long pipe and returning it, it is cut according to the detailed data and parameters, and then a series of machinery such as a pipe bender is used to make it into the desired style, such as 45 degrees, 90 degrees, and 180 degrees. Various specifications of elbows, tees, crosses, large and small heads, and even a few non-standard sizes;
In addition to industrial stainless steel pipe fittings, the other is sanitary stainless steel pipe fittings, which have higher production requirements. The raw materials for stainless steel pipe fittings are basically the same, mainly or 304, and small batches will use 316 or 316L. The basics of the previous process flow are the same. There is a polishing process on the back. This is also a very tight process. It not only requires gloss, but also requires a flat surface to reduce the appearance of a few defects. Sanitary stainless steel pipe fittings are mainly It is used in the food industry and the pharmaceutical and pharmaceutical industries, as well as elbows with different angles, three links, four links, and large and small elbows.
After talking about the two subdivisions above, there is another link method that is also divided into more common ones: fast loading, welding and ribbing. No matter what kind of stainless steel pipe fittings are ultimately to achieve the benefits of links and fluids.
One of the tension components that affect the surface quality of stainless steel pipe fittings is that the oil content of the emulsion is too high. The emulsion is a necessary solution when the cold rolling mill is running and processing stainless steel plates. It is very important for the smoothness and cooling of the stainless steel plates. The benefit, but the emulsion contains oil, and anyone with a history knows that oil at high temperature will be cracked into carbon.
If the oil in the emulsion can not be removed in real time after being carbonized at high temperature, it will accumulate on the surface of 304 stainless steel pipe fittings, and indentation will be formed after rolling.
Because the oil content in the emulsion is very high, after annealing on the inner wall of the protective cover, it will form carbonization and accumulate on the inner wall of the protective cover. During the rest of the processing process, these carbon blacks will be brought to the surface of the 304 stainless steel pipe fittings, thus cage Covering the surface of the 304 stainless steel pipe affects the surface quality. After a long time of processing operations, a lot of oil, carbon black, dust and other debris will also accumulate on the convection plate and the stove. If it is not cleaned up, it will also fall on the surface of the stainless steel plate.
In fact, the chemical composition and surface finish of 304 stainless steel pipe fittings are closely related to the production environment and cleanliness. As long as the convection plate, stove and the inner wall of the protective cover are cleaned in real time, the surface quality of the 304 stainless steel joint can be indirectly improved.
