Coil type reaction vessels are divided into inner coil tube reaction vessels and outer coil tube reaction vessels according to process requirements. It can have a heating or cooling effect. The application of steam heating coils can disperse the pressure on the kettle body. This type of equipment is widely used in petroleum, chemical, rubber, pesticide, dye, medicine, food, and is used to complete pressure vessels for processes such as vulcanization, nitration, hydrogenation, alkylation, polymerization, and condensation, such as reactors, reactors, decomposition pots, polymerization pots, etc; The materials generally include carbon manganese steel, stainless steel, zirconium, nickel based (Hastelloy, Monel, Inconel) alloys, and other composite materials, which can be stirred to form anchor, slurry, turbine, propulsion, or frame structures. There are two types of support seats: suspended or supported.