Center Enamel Achieves NSF International Certification for Glass-Fused-to-Steel Bolted Tanks
Created on 2024.03.23
Center Enamel Achieves NSF/ANSI 61 Certification for Glass-Fused-to-Steel Bolted Tanks
Center Enamel (Shijiazhuang Zhengzhong Technology Co., Ltd.) has reinforced its position as a global leader in water infrastructure by achieving NSF/ANSI 61 certification for its Glass-Fused-to-Steel (GFS) bolted tanks. This milestone validates the company’s commitment to providing safe, reliable, and durable storage solutions for municipal and industrial potable water systems worldwide.
1. The Critical Importance of NSF/ANSI 61 Certification
In the water management industry, NSF/ANSI 61 is the essential standard for health effects. It mandates that any material or product coming into contact with drinking water must not leach contaminants—such as heavy metals, volatile organic compounds (VOCs), or synthetic chemicals—into the supply.
For municipal engineers, procuring an NSF/ANSI 61 certified tank is a non-negotiable risk-mitigation strategy. It ensures that the storage infrastructure actively maintains water purity rather than compromising it.
2. Why GFS Technology Excels in Potable Water Storage
The Glass-Fused-to-Steel (GFS) process, a hallmark of Center Enamel’s manufacturing, is uniquely suited to meet the rigorous hygiene requirements of the NSF standard:
● Inorganic Passivation: The surface of a GFS tank is a fused, inorganic glass-ceramic coating. Unlike field-applied polymer or epoxy liners—which can degrade, crack, or leach organic compounds over time—the glass surface is completely inert.
● Biofilm Resistance: The non-porous, ultra-smooth finish prevents the accumulation of slime, algae, and microbial colonies, which are common issues in traditional concrete or poorly coated steel reservoirs.
● Zero-Leach Performance: Because the coating is a molecular fusion of silica and steel, there is no risk of synthetic polymer additives entering the drinking water supply.
3. Engineering Compliance & Global Standards
Center Enamel’s achievement of NSF/ANSI 61 certification is part of a broader, rigorous quality framework. Their GFS tanks are manufactured in accordance with multiple international standards:
Standard | Engineering Significance |
NSF/ANSI 61 | Confirms safety for potable drinking water contact. |
AWWA D103-09 | Dictates structural design for bolted steel tanks in water service. |
ISO 28765 | Governs the quality and testing of vitreous enamel coatings. |
ISO 9001 / 45001 | Ensures factory-wide quality and occupational health/safety management. |
4. Modular Engineering for Scalable Water Security
The certification covers a wide range of tank capacities, from 20m³ to 15,000m³, making these tanks ideal for various infrastructure scales, including small community water systems and massive municipal water grids.
● Rapid Deployment: Center Enamel’s top-down jacking installation system allows tanks to be built safely at ground level, reducing the construction timeline by up to 60% compared to concrete or welded steel alternatives.
● Proven Global Reliability: Center Enamel has successfully commissioned potable water storage projects across the globe, including in regions like Namibia, the Maldives, and Costa Rica, demonstrating that the technology performs reliably in diverse climatic conditions while maintaining the highest water safety standards.
5. Frequently Asked Questions (FAQ)
Q: Does NSF certification apply to the entire tank or just the coating?
A: NSF/ANSI 61 certification evaluates the finished product, including the glass coating, sealants, and components that come into contact with the water, ensuring the entire system is safe for potable use.
Q: How do GFS tanks compare to traditional concrete tanks for drinking water?
A: GFS tanks are non-porous, resistant to structural cracking, and inhibit biofilm growth—factors that make them significantly more hygienic and lower-maintenance than concrete reservoirs.
Q: Can these tanks be relocated?
A: Yes. Because they are modular and bolted, Center Enamel tanks can be dismantled, moved, and re-erected at new locations, offering unparalleled flexibility for temporary or evolving infrastructure needs.
For technical consultations, NSF compliance documentation, or customized structural proposals for your municipal or industrial water project, contact the Center Enamel engineering team at sales@cectank.com.
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