High-pure stainless steel pipes are used in the application areas: high purity and ultra-high purity gases, flammable and explosive gases, poisonous gases such as special gas pipeline systems, secondary pilot, and other gas equipment.
In the process of stainless steel smelting materials, about 200 g of gas can be absorbed per ton. The stainless steel is processed, not only the surface is adhesive, but also a certain amount of gas is also affected in its metal lattice. When there is air flow in the pipeline, this part of the gas resides in the metal will re-enter the airflow, and pollute the pure gas. When the intractive gas flow is discontinuous, the pipe is adsorbed under pressure to form the gas, and the gas is stopped by the gas stream, and the gas adsorbed by the tube has formed a step-down analysis, and the parsed gas is also used as impurities into the pure gas in the pipe. At the same time, adsorption, analyze, so that the surface of the pipe also produces a certain powder, which is also a purified gas in the tube. This feature of the pipe is critical, in order to ensure the purity of the gas delivered, not only requires a very high smoothness of the inner surface, but also high wear resistant characteristics.
High pure gas pipe technology is an important part of the high-purity gas supply system. It is a key technique that can be sent to high purity gas to the gas supply to the gas point. The so-called high purity air pipe technology includes systematic Correct design, pipe fittings and accessories, construction installation and test testing.
In particular, some of these gases such as SiH4 self-combustion, as long as one leaks will react vigorously with oxygen in the air, start combustion; and ASH3's vicinity, any micro leaks may cause the harm of people's life, that is Because these obvious hazards, the requirements for system design security are particularly high.
When the gas is strong in corrosion, it is necessary to use the corrosion-resistant stainless steel tube. Otherwise, the pipe will produce
The connection of high flow of high traffic, high-purity gas transmission pipeline is in principle, in principle, welding, requiring pipes, and tissue does not change during welding. When the carbon containing too high is welded, the gas permeation of the welded portion such that the internal and external gas is penetrated, destroying the purity, dryness and cleanliness of the delivery gas, resulting in all the efforts of our efforts.
In summary, for high purity gas and special gas delivery pipes, a high-purity stainless steel pipe for special treatment is required to make high purity pipe systems (including pipes, tubers, valves, VMB, VMP) in high purity gas distribution. It has a vital mission.