Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) is a leading manufacturer of high-performance storage solutions, including glass-fused-to-steel tanks, epoxy-coated tanks, and aluminum dome roofs. With over three decades of expertise, the company has built a reputation for delivering durable, customizable, and innovative storage technologies for industries such as water treatment, agriculture, biogas, food, and chemical processing. Operating in more than 100 countries and regions, Center Enamel provides comprehensive engineering and manufacturing solutions that meet international standards such as AWWA, ISO, and NSF. Among the most versatile solutions the company offers are aluminum dome roofs, particularly suited for drinking water storage tanks, where hygiene, structural integrity, and surface performance are critical.
Aluminum dome roofs are engineered geodesic structures typically installed on cylindrical or conical tanks to provide weather-resistant and airtight covers. These domes are constructed from high-grade aluminum alloys that offer superior corrosion resistance, strength, and lightweight characteristics. Unlike conventional roof structures, aluminum domes feature a triangulated framework that distributes loads evenly across the surface, eliminating the need for internal support columns and maximizing internal tank volume.
In the context of drinking water storage tanks, aluminum dome roofs serve an essential role in maintaining water quality by preventing environmental contaminants, dust, insects, and debris from entering the tank. Additionally, they offer robust protection against rainwater intrusion, UV exposure, and biological growth—all of which are detrimental to the safety and hygiene of potable water.
These domes are prefabricated off-site, delivered in modular sections, and assembled on location, making them suitable for both new installations and retrofitting onto existing tanks. Their adaptability and efficient assembly process make them an ideal choice for municipal water utilities, industrial water systems, and rural clean water supply infrastructure.
In drinking water storage applications, surface cleanliness, non-toxicity, and structural integrity are vital. Aluminum dome roofs excel in these aspects, making them the optimal solution for safe and long-lasting water storage.
Superior Surface Properties:
The surface of aluminum dome panels is naturally non-porous and smooth, which inhibits the accumulation of dirt, algae, and biofilms. This minimizes cleaning requirements and supports consistent water quality. Furthermore, aluminum does not react chemically with water, ensuring that no contaminants leach into the stored liquid.
Corrosion Resistance:
Aluminum dome roofs are particularly suited for humid environments where corrosion could be a concern. Unlike steel or other materials that require coating or painting, aluminum resists oxidation without additional treatment. This guarantees a long-lasting protective barrier against the elements.
Lightweight and Strong:
Despite being much lighter than steel, aluminum offers high strength-to-weight ratios, enabling the dome structure to withstand wind, snow loads, and seismic activity without adding excessive load to the tank walls or foundation. This makes them especially suitable for large-scale tanks or tanks located in remote and challenging environments.
Airtight and UV-Proof:
The design of aluminum dome roofs prevents the infiltration of air, light, and contaminants, helping to maintain the chemical and biological safety of the drinking water. The reflective surface also shields the stored water from UV rays, which can promote microbial growth and degrade water quality over time.
Aluminum dome roofs are widely used in public and private drinking water storage systems across the world. Their structural and hygienic properties make them ideal for various use cases in the water sector.
Municipal Water Utilities:
Large cities and towns use above-ground reservoirs to store treated drinking water. Aluminum domes provide a sealed and hygienic cover, protecting the water from air pollution, rainfall, and tampering. Their easy integration with monitoring systems ensures effective water management.
Rural Water Supply Systems:
In rural or remote locations where water infrastructure is limited, aluminum dome roofs are ideal for low-maintenance tanks. Their quick assembly and low weight simplify transportation and installation, while their long service life ensures a reliable clean water source.
Industrial Drinking Water Systems:
Industries that require high volumes of clean water—for employee consumption or as part of manufacturing processes—benefit from aluminum domes as they prevent contamination and support water safety compliance standards.
Emergency Water Storage:
Governments and NGOs use aluminum-domed tanks for emergency relief in disaster-struck areas. These tanks are rapidly deployable and maintain the safety of stored water for extended periods without the need for frequent maintenance.
Water Reuse and Rainwater Harvesting:
Even for applications involving harvested rainwater intended for drinking after treatment, aluminum domes prevent re-contamination and evaporation, preserving water quality and quantity.
Center Enamel is distinguished not only by its high-quality products but also by its ability to deliver full-service solutions tailored to the water industry. When selecting aluminum dome roofs for drinking water tanks, partnering with an experienced and globally trusted manufacturer makes all the difference.
Engineering and Design Expertise:
With an in-house engineering team, Center Enamel provides custom dome roof designs that meet client-specific requirements for size, environmental conditions, and integration with existing infrastructure. All designs comply with international standards such as AWWA D103, Eurocode, and API.
Premium Aluminum Materials:
Only marine-grade, corrosion-resistant aluminum alloys are used, ensuring the durability and performance of every dome. Our selection of materials guarantees resistance to harsh climates, including coastal areas, deserts, and industrial zones.
Precision Manufacturing and Quality Control:
Center Enamel utilizes advanced CNC machining and assembly-line production processes, maintaining tight tolerances for structural integrity and sealing. Every dome is tested before delivery to ensure leak-proof performance and exact specifications.