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As industries worldwide face increasing demands for safe, durable, and environmentally resilient storage solutions, Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) stands out as a global leader in Glass-Fused-to-Steel (GFS) tank manufacturing. Since 2008, Center Enamel has specialized in designing and fabricating bolted storage tanks for a wide range of applications, including drinking water, wastewater treatment, biogas, fire water, irrigation, agricultural storage, and industrial effluents.
With nearly 200 patented technologies in enameling and a dedicated R&D team, Center Enamel has established itself as the most experienced professional bolted tank manufacturer in Asia. Our tanks are certified under ISO9001, NSF61, CE/EN1090, ISO28765, WRAS, FM, LFGB, BSCI, and ISO45001, meeting the highest international standards for safety, quality, and performance.
What Are Glass-Fused-to-Steel Tanks?
Glass-Fused-to-Steel tanks (GFS tanks), also known as glass-lined steel tanks, combine the strength of steel with the corrosion resistance of glass. This is achieved through a high-temperature process (820°C–930°C) in which molten glass fuses to the surface of hot-rolled steel plates. The result is a robust, smooth, and chemically resistant coating that extends the tank’s service life to 30 years or more, even under the harshest environmental conditions.
Unlike traditional welded steel tanks or fusion bonded epoxy tanks, GFS tanks offer superior durability, low maintenance, and leak-proof integrity, making them ideal for water storage, wastewater treatment, industrial processes, and biogas production.
Advantages of Center Enamel GFS Tanks1. Exceptional Corrosion Resistance
The glass coating ensures that tanks withstand acidic, alkaline, and chemically aggressive fluids, including municipal sewage, industrial effluents, and agricultural liquids. This feature reduces corrosion-related maintenance and replacement costs.
2. Leak-Proof and Gas/Liquid Impermeable
The fusion process creates a sealed, impermeable surface that prevents leaks and contamination. This is particularly crucial in applications such as anaerobic digesters, landfill leachate storage, and potable water supply, where containment integrity is critical.
3. Structural Strength and Durability
Steel provides mechanical strength, while glass adds a wear-resistant surface. GFS tanks can withstand external pressures, temperature variations, and physical impacts, making them suitable for demanding industrial and municipal projects.
4. Low Maintenance
The smooth, glossy, inert surface prevents sediment buildup and biofilm formation, enabling easy cleaning and reducing operational downtime.
5. Modular and Cost-Effective Installation
The bolted modular design allows for faster, easier, and more cost-effective on-site assembly. Tanks can be constructed in various diameters, heights, and capacities to suit project-specific needs, from small-scale rural water supply to large municipal wastewater facilities.
6. Long-Lasting Aesthetic Integrity
Available in multiple colors such as Black Blue, Grey Olive, Forest Green, Cobalt Blue, Desert Tan, Red, Sky Blue, and Mist Green, GFS tanks maintain their appearance over decades, resisting fading, chalking, and graffiti.
Technical Specifications
| FeatureSpecification | |
| Material | Hot-rolled steel with double-sided glass fusion |
| Coating Thickness | 0.25–0.45 mm |
| pH Resistance | Standard 3–11, Special 1–14 |
| Adhesion | 3450 N/cm² |
| Hardness | 6.0 Mohs |
| Holiday Test | 1500 V |
| Permeability | Gas and liquid impermeable |
| Surface | Smooth, glossy, inert, anti-adhesion |
| Service Life | ≥30 Years |
| Optional Accessories | Manholes, flanges, ladders, platforms, top cover handles |
GFS tanks adhere to international standards, including AWWA D103-09, OSHA, ISO28765, NSF/ANSI 61, NFPA, and more, ensuring global compatibility and regulatory compliance.
Applications of Glass-Fused-to-Steel TanksDrinking Water Storage
GFS tanks provide safe, corrosion-resistant potable water storage for urban and rural water supply systems, emergency reserves, and backup water storage. Projects include the Brazil Drinking Water Project, where GFS tanks ensure reliable municipal water supply.
Wastewater Storage and Treatment
GFS tanks are ideal for municipal sewage treatment plants and industrial effluent storage, providing a durable solution for processing and holding wastewater.
Biogas and Anaerobic Digestion
GFS tanks serve as anaerobic digesters, converting organic waste into renewable energy. Their chemical resistance and impermeability are crucial for efficient biogas production, as seen in the Malaysia POME Biogas Project.
Fire Water Storage
Industrial fire protection systems benefit from GFS fire water tanks, providing reliable emergency water reserves for airports, commercial complexes, and industrial facilities.
Agricultural Applications
GFS tanks store irrigation water, slurry, fertilizers, and rainwater, supporting sustainable farming operations. For instance, the Saudi Arabia Irrigation Water Project utilized GFS tanks to supply water for large-scale agricultural use.
Dry Bulk Storage
These tanks also store grains, corn, cement, lime, and other bulk solids, with corrosion-resistant surfaces ensuring long-term storage without contamination.
Industrial Applications
GFS tanks handle chemical wastewater, industrial water, and effluents, providing safe containment and compliance with environmental regulations.
Successful Global Projects
Center Enamel’s GFS tanks have been deployed in over 100 countries, demonstrating reliability and versatility in diverse sectors:
These projects reflect Center Enamel’s engineering expertise, global reach, and commitment to quality.
Why Choose Center Enamel?
Commitment to Innovation and Sustainability
Center Enamel integrates technological innovation, engineering excellence, and environmental responsibility in every GFS tank. By combining steel’s strength with glass’s chemical resistance, our tanks ensure long-term reliability, reduced maintenance, and safe storage.
Whether for municipal water, wastewater treatment, biogas energy, fire water, agriculture, or industrial effluents, Center Enamel GFS tanks provide the most advanced, durable, and globally recognized storage solutions available today.
Glass-Fused-to-Steel tanks by Center Enamel are engineered for durability, efficiency, and versatility. With proven performance in over 100 countries, international certifications, and decades of industry experience, Center Enamel remains the trusted global partner for safe, long-lasting, and environmentally responsible storage solutions.
For industries and municipalities seeking high-performance, low-maintenance, and sustainable tanks, Center Enamel’s GFS tanks deliver unmatched quality and global support.
Center Enamel – Leading the World in Glass-Fused-to-Steel Tank Solutions.
A professional manufacturer dedicated to the design and fabrication of bolted storage tanks since 2008.
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