In order to meet the higher requirements for the solution treatment process of stainless steel pipes, we have developed an intelligent heat-preserving type bright solid solution equipment on the basis of intelligent bright solid solution equipment. The equipment is divided into a heating section and a heat preservation section. During the production process, the stainless steel tube is heated to a set solid solution temperature during the heating section. The heat preservation section is used for a certain period of time to stabilize the treatment, so that the carbides are more fully dissolved in the austenite, thereby more Effectively eliminates the possibility of chromium deficiency at grain boundaries and avoids the occurrence of intergranular corrosion. After stabilization, austenitic stainless steel has better comprehensive mechanical properties than solution treatment.