Stainless Steel Chilling Tank

Fabricated an industrial chilling tank system in stainless steel for a food processing client through PT Witanabe. The system uses immersion cooling, a submerged coil arrangement, to bring product temperature down quickly within the tank. The application is food processing, which means the material and fabrication standards are not the same as general industrial work.

Food-grade stainless fabrication requires attention to surface finish, weld quality, and internal geometry that industrial tank work does not. Crevices trap contamination. Poor internal welds are not just a structural concern. They are a hygiene concern. The interior surface finish specification exists for a reason, and it has to be met and verified before the tank ships.

The thermal side of the design, sizing the cooling coil, determining refrigerant flow requirements, calculating pulldown time for the target product load, runs in parallel with the fabrication specification. Getting one right without the other produces a well-built tank that doesn't meet the process requirement, or a correctly sized thermal system in a tank that fails food safety inspection. Both outcomes are equally useless to the client.