Glass-fused-to-steel (GFS) combines structural steel with a vitreous coating fused at temperatures between 820°C and 930°C. The result is a non-porous, inert surface with exceptional chemical resistance, suitable for extreme pH ranges from 1 to 14. This places it above epoxy and close to stainless steel in terms of durability, with the added benefit of potentially even better performance against aggressive chemicals in certain applications.

This system provides a continuous barrier that does not absorb fluids or allow permeation, ensuring no transfer to the contents and facilitating cleaning and sanitizing. It is ideal for sectors where chemical corrosion, abrasion, or anaerobic processes are critical, such as industrial water treatment plants, digesters, biogas facilities, or long-term effluent storage.