The correct selection of materials is the prerequisite to ensure the manufacturing quality of pressure vessels. Improper selection of materials, misuse of materials, material defects and other material causes are one of the main causes of pressure vessel equipment accidents.
Stainless steel is widely used in petroleum, chemical, pharmaceutical, electric power and civil industry due to its different alloy elements, corrosion resistance of various media and good low temperature performance, especially in the production of pressure vessels. As for the selection of special materials such as duplex stainless steel and ultra-low carbon stainless steel for pressure vessels, we should understand the national production situation, and do not go into the misunderstanding of pure price comparison because of interest. For a large number of use and key equipment selection of stainless steel, we should carefully examine the quality credibility of the manufacturer, not simply trust the products and samples provided by the supplier, but also the material manufacturer, equipment, quality management system and historical performance.