Product Specification

The Foundation of Water Treatment: GFS Raw Water Tanks

The Engineering Standard for Modern Infrastructure

Raw water—whether sourced from rivers, lakes, or groundwater—is the starting point for all municipal and industrial processes. However, it often contains suspended solids, organic matter, and minerals that can be highly corrosive to standard storage vessels.

Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) provides the premier global solution: Glass-Fused-to-Steel (GFS) tanks. By fusing the structural strength of steel with the permanent, inert protection of glass at temperatures exceeding 820°C, we deliver raw water storage engineered for a 30 to 50-year service life.

1. The Science of GFS: Engineered for Raw Water Resilience

Raw water chemistry is unpredictable. Center Enamel’s GFS technology creates an inorganic, non-porous barrier that is molecularly bonded to the steel substrate, ensuring the vessel remains unaffected by the fluctuating pH or mineral content of the source water.

• Superior Surface Protection: With a coating hardness of 6.0 Mohs, our GFS panels offer diamond-standard wear resistance against the abrasive silt and sand often found in raw intake water.
• 100% Holiday-Free Reliability: Every panel manufactured by Center Enamel undergoes a 1500V high-voltage spark test. This rigorous quality control ensures zero-discontinuity in the coating, providing a 100% leak-proof barrier.
• Anti-Algae & Easy Maintenance: The smooth, vitreous enamel finish limits the ability of algae and biofilm to adhere to the tank walls, facilitating easier cleaning and reducing chemical treatment costs.

2. Technical Specifications

Center Enamel GFS tanks are engineered to meet and exceed global standards, including AWWA D103-09 and ISO 28765.

3. Strategic Advantages for Global EPCs

Rapid Modular Deployment & Scalability

Infrastructure projects often operate on tight schedules. Center Enamel’s modular bolted design allows for:

• 60% Faster Installation: Panels are factory-finished and bolted on-site, eliminating the need for "hot work" (welding) or curing times associated with concrete.
• Vertical Expansion: If future demand grows, our bolted design often allows for the addition of vertical rings to increase capacity without expanding the footprint.

Integrated Pre-Treatment Protection

To ensure the raw water remains stable before entering the treatment train, we integrate:

• Aluminum Geodesic Dome Roofs: As demonstrated in our 2024 Brazil project, these roofs provide a clear-span, UV-blocking cover that prevents algae growth and atmospheric contamination.
• Specialized Nozzle Integration: We provide precision-engineered nozzles and internal baffles to manage the high-flow requirements typical of raw water intake systems.

4. Proven Authority: 2024–2025 Global Case Highlights

Our authority is validated by the successful delivery of massive-scale reservoirs in over 100 countries:

• Nicaragua Infrastructure (2024): High-capacity raw water reservoirs reaching 24 meters in height with a total volume of 4,958 m^3.
• Swaziland Industrial Project: Landmark installation featuring individual tanks with a total project volume of 42,188 m^3—setting global records for single-vessel bolted capacity.
• Beijing Daxing Sustainability Project: Implementation of massive 10,392 m^3 GFS tanks handling complex raw intake and industrial process water.
• Brazil & Maldives (2024): Deployment of modular water security solutions in diverse climates, ensuring safe raw water containment in high-salinity island environments.

5. FAQ: Why GFS is the Premium Choice for Raw Water

How does GFS compare to Concrete for raw water storage?

Concrete is porous and prone to micro-cracking, which can lead to seepage and contamination. GFS is 100% impermeable, factory-tested at 1500V, and offers a significantly higher ROI over its 30–50 year lifespan due to minimal maintenance requirements.

Can Center Enamel GFS tanks handle abrasive river water?

Yes. The 6.0 Mohs hardness of our glass lining is specifically engineered to handle the sliding abrasion caused by silt, sand, and other suspended solids typical of river-sourced raw water.

About Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel)

With over 30 years of experience and nearly 200 patents, we are Asia's premier manufacturer of bolted tanks. We provide comprehensive EPC technical support, ensuring that every raw water storage solution is engineered for maximum safety, durability, and long-term reliability.

Secure your water intake infrastructure with a 60,000 m3+ GFS solution.