Stainless steel valves have the advantages of long service life, rust-free, green and environmental protection, and have entered industrial applications. They have become obligatory valve products for pipeline industry in all trades, but there is no valve manufacturer in China that can meet international standards. Popularization, so customers in the purchase of stainless steel valves must require manufacturers to provide a variety of stainless steel valve production and factory certification. They can also be tested with spectrometers. Spectrometer is widely used because of its high accuracy and wide application. In recent years, the application of stainless steel valve detection has also developed rapidly. Some 304 and 316L valves mainly rely on equipment testing to reduce the purchase of substandard products.
Stainless steel valves are commonly used in corrosive working media applications, such as corrosive media, food, medicine, oil, liquid metal and radioactive media. Any of these valve materials can resist the corrosion of working media. Ability is relatively limited and affected by many factors. Corrosion resistance of the material can be guaranteed if proper process and heat treatment are adopted in the manufacturing process. For concentrated nitric acid medium with a concentration of more than 98%, the steel has no corrosion resistance regardless of the heat treatment process. Therefore, when choosing valve materials such as ball valves, gate valves, globe valves and check valves according to the properties of working media, it is necessary to study the effects of medium concentration, temperature, material heat treatment process and other factors on corrosion rate at the same time. Sisterhood. Good steel material, such as 316L, 904 or titanium valves.
With the continuous development of petrochemical technology and scale, the requirements for stainless steel valves in petrochemical industry are becoming higher and higher. In addition to improving the quality of J41W stainless steel globe valves and Z41W stainless steel gate valves, the requirements for corrosive materials are also increasing. The material Q41F stainless steel ball valve has higher and higher requirements for ethylene cracking equipment, polyethylene equipment and polypropylene equipment in ethylene production, PTA equipment in chemical fiber production (terephthalic acid), polyester equipment and polyester spinning equipment, in order to develop corrosion resistant materials. Technically, 316L stainless steel valves have the characteristics of corrosion resistance, high strength, light weight and long service life.
There are more and more progressive industries in society, and more and more industries can use stainless steel valve products. New industries and new products will gradually replace cast iron valves, bringing new opportunities for stainless steel valve industry.
