High Corrosion Resistance GFS Tanks for Biogas Digesters - Leading China Suppliers & Factory
Description
The core requirement for anaerobic digester tanks is corrosion resistance. The internal environment of a biogas digester is highly acidic (pH 3–11) and rich in corrosive gases such as hydrogen sulfide. GFS (Glass-Fused-to-Steel) is an ideal material for biogas digester tanks.
The Glass fused to steel (GFS) tank is a kind of bolted storage tank made from two materials: glass and steel. High-strength TRS (titanium-rich steel) plates and enamels are perfectly fused at high temperatures to form a highly inert inorganic glaze layer. This coating system has excellent anti-corrosion properties and is the best choice for tank.
Material Characteristics of Glass-Fused-to-Steel Tanks
⚙️ Low Carbon, High Strength, High Titanium.
The steel substrate employed in the construction of glass-fused-to-steel tanks is a special high strength enamelled steel with a unique design and superior properties. Its mechanical properties, including yield strength, tensile strength, and elongation, far exceed those of conventional steel sheets.
Features Of Glass Fused To Steel Tanks
- Fast installation and short construction period
- Excellent anti-corrosion properties
- Low construction environment requirements
- Strong temperature adaptability
- Wide range of applications, seamlessly integrated to form assembled reactors
- Aesthetically pleasing appearance
- Flexible for relocation, expansion and recycling
- Simple maintenance and service life in excess of 30 years
Specification
| Coating thickness | 250~450um |
| pH range | Standard grade 3~11; Special grade 1~14 |
| Coating process | Standard 2 coats 2 fire; 3 coats 3 fire available |
| Hardness | 6.0 Mohs |
| Elasticity | 500KN/mm |
| Service life | More than 30 years |
The requirements for biogas digester tanks are essentially comprehensive requirements for safety, corrosion resistance, sealing, and functionality. The corrosion resistance and ease of construction of enameled bolted tanks/GFS bolted tanks are their main advantages for anaerobic reactors.
Uses of Glass Fused To Steel Tanks
Glass Fused To Steel Tanks are widely used in various industries and serve different purposes in different environments. These tanks are mainly used for:
Municipal drinking water, sewage treatment, sludge storage, wastewater treatment and anaerobic digestion and biogas.
Industrial wastewater treatment, storage, anaerobic digestion and biogas, process water storage and bulk solids storage.
Agricultural slurry storage, on- and off-farm biogas production, storage of livestock feeds such as hay, maize and high-moisture grains, and bulk solids storage.
Renowned for their extended service life and minimal maintenance requirements owing to corrosion resistance and UV stability, glass-fused tanks cater to municipal, industrial, and agricultural needs.
Their superior corrosion resistance, durability and ease of maintenance make them ideal for storing and handling a wide range of liquids, chemicals and gases. Additionally, these glass fused bolted steel tanks can be used for rainwater harvesting, firefighting and storage of various industrial liquids.
Frequently Asked Questions
QWhat is a Glass-Fused-to-Steel (GFS) tank?
A Glass-Fused-to-Steel tank is a bolted storage tank made from glass and steel. High-strength TRS (titanium-rich steel) plates and enamels are fused together at high temperatures to create a highly inert inorganic glaze layer, delivering outstanding anti-corrosion performance for long-term storage applications.
QWhy are GFS tanks the preferred choice for biogas digester applications?
Biogas digesters operate in highly acidic environments (pH 3–11) and are continuously exposed to corrosive gases such as hydrogen sulfide. GFS tanks provide superior corrosion resistance across this full pH range, meeting the critical safety, sealing, and durability requirements of anaerobic reactor systems.
QHow long is the service life of a Glass-Fused-to-Steel tank?
GFS tanks are designed for a service life in excess of 30 years. Their glass coating provides excellent UV stability and corrosion resistance, significantly reducing maintenance requirements and lifecycle costs compared to conventional steel or concrete tanks.
QWhat industries and applications are GFS tanks used in?
GFS tanks serve municipal, industrial, and agricultural sectors. Key applications include municipal drinking water and sewage treatment, sludge and wastewater storage, industrial process water and bulk solids storage, agricultural slurry and biogas systems, rainwater harvesting, and firefighting water reserves.
QWhat are the key material properties of the steel used in GFS tanks?
The steel substrate in GFS tanks is a specially formulated low-carbon, high-strength, high-titanium enamelled steel. Its yield strength, tensile strength, and elongation properties far exceed those of conventional steel sheets, ensuring both structural integrity and superior adhesion of the glass coating layer.
QCan GFS tanks be relocated, expanded, or recycled after installation?
Yes. The bolted modular design of GFS tanks allows for straightforward relocation, capacity expansion, and material recycling at end of life. Individual panels can be disassembled and reassembled at a new site, offering far greater flexibility than welded steel or poured concrete storage solutions.