Apextank

Glass Fused to Steel Tank (GFS Tank)

Glass Fused Steel tanks (GFS tanks), also referred to as Glass Lined Steel tanks (GLS tanks), are constructed using panels made of mild steel. These panels undergo a process where a layer of glass or silicate is fused onto them.

The primary purpose of fusing glass with steel is to enhance the overall durability of the panels. Single-layered steel is susceptible to environmental conditions, leading to earlier decomposition or corrosion. 

By fusing glass with steel, this vulnerability is mitigated. The fusion process increases the strength of the panels, expands the acceptable range of pH values for alkaline solutions, and enhances resistance to abrasion.

Process and Technology

Glass is fused onto steel tank panels, which are then lined both inside and outside with glass enamel. This enamel forms a solid, smooth, and glossy layer of silicate fused onto the steel tank panels in a specialized furnace, where temperatures range between 780 and 900 degrees Celsius. This process endows the steel panels forming the tank shell with exceptional durability. The application of glass coats on both the inner and outer surfaces of the panels enhances their robustness. These panels are then secured using high-grade bolts and sealed with flexible silicones to ensure a tight seal.

The installation materials and shell accessories undergo comprehensive surface treatment. These glass-fused-to-steel (GFS) tanks excel in storing fluids of various types, including solid materials. Their unique selling proposition is being FM Global approved, making them ideal for industrial water storage. GFS/GLS tanks are essential for facilities involved in environmental technology, such as wastewater treatment, fire-fighting water storage, and anaerobic digester tanks.

Ensuring quality and adhering to standards

Quality standards are maintained in accordance with the European Enamel Authority (EEA). The Spark test for each panel is conducted according to EN 14430: 2004. Mohs hardness is assessed following EN 15771, and chemical resistance is evaluated in compliance with EN ISO 28706:2016.

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