Function: provide heating protection for annealing material Design features: Design features: corrugated inner cap made of stainless and heat-resistant steelcan increase the strength of inner cap, increase the area of heat absorption and heat dissipation, and extend the service life. The sealing flange processed by thebottom is pressed on the base sealing ring through the hydraulic locking device, forming a closed space. The guide devices on both sides enable it to be placed correctly on the base. Each cooling cap include: Spin-formed heat-resistant steel head Spin-formed corrugated cylinder Machined sealing flange Cooling water tank, water tank, etc by sealing checking Cooling water quick manual joints and valves, pipelines Clamp lifting device made of heat-resistant steel and spray overflow ring