Reaction kettle is pressure container, which is mainly applied to following technological process: Oil / Polymerization / Chemical / Rubber / Pesticide / Dye/Medicine / Food, and it is used to complete the sulfide/nitration / hydrogenation, alkylation and condensation. Such products as Reactor / Reaction kettle / Decomposition pot/ Polymerize, and its material is always Carbon manganese steel / stainless steel / zirconium/nickel base (hartz, monel, inconel nickel) alloys and other composite materials.