Stainless steel valves are normally used in the working medium has certain corrosion situations, such as corrosive medium, food, medicine, chemical products, such as oil, liquid metal and radioactive media, in these areas with any kind of valve material, working medium corrosion resistant ability is relatively limited, and affected by many factors. If the processing technology and heat treatment process are used in the manufacturing process, the corrosion resistance of this material can be guaranteed. In the concentration of >98% concentrated nitric acid medium, no matter what heat treatment process, this steel has no corrosion resistance. Choose in according to the nature of the working medium, therefore, ball valve, gate valve, globe valve and check valve material, must study the concentration of the medium at the same time, temperature and material heat treatment process of the influence of various factors on the corrosion resistance to select better steel material such as 316 l, 316 or titanium valve.
With the continuous development of technology and scale of petrochemical industry, more and more high to the requirement of petrochemical use stainless steel valves, in addition to continue to improve the quality of conventional valve such as J41W globe valve, Z41W stainless steel stainless steel gate valve and so on, especially in Q41F corrosive materials stainless steel ball valve requirements more and more big, such as ethylene production of ethylene cracking unit device, polyethylene and polypropylene, polyester device in the production of PTA (purified terephthalic acid (PTA)), polyester and polyester spinning device, etc., therefore, to development of corrosion resistant technology, 316 l stainless steel valve is corrosion resistant, high strength, light, long life and other excellent characteristics.
Social progress in the industry on the rise, stainless steel can be used for valve products industry is also growing, new products and new industry will gradually replace the cast iron valve, this creates new opportunities for the stainless steel valve industry market development prospect is good.