As a global leader in liquid containment, Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) specializes in the engineering and fabrication of Epoxy Coated Bolted Tanks. These vessels represent the perfect balance of durability, cost-efficiency, and rapid deployment, making them the preferred choice for municipal water, industrial wastewater, and dry bulk storage worldwide.
Our tanks utilize Fusion Bonded Epoxy (FBE) technology—a sophisticated factory-applied coating process that far surpasses traditional field-applied paint in terms of corrosion resistance and longevity.
Center Enamel’s epoxy coated bolted tanks are engineered to meet the world’s most stringent industrial standards, including AWWA D103-09 and ISO 9001:2015.
Feature | Specification / Options |
Coating Type | Fusion Bonded Epoxy (FBE) / Electrostatic Powder Coating |
Design Standards | AWWA D103-09, OSHA, NFPA 22, Eurocode |
Material | High-strength Carbon Steel (Q235B / Q345B) |
Coating Thickness | Internal: 200–400 microns; External: 200–400 microns |
pH Range | Suitable for pH levels 3 to 11 |
Capacity | 20 m3 to 20,000 m3 (Customizable) |
Service Life | 20 Years with proper maintenance |
Application | Potable Water, Wastewater, Fire Water, Bioenergy, Dry Bulk |
The secret to the performance of an epoxy coated bolted tank lies in the factory-controlled application. Unlike welded tanks that are painted in the field—where weather and humidity can compromise the finish—FBE tanks are coated in a sterile, high-tech facility.
Our steel plates undergo grit blasting to a near-white finish (SA 2.5) to ensure maximum adhesion. The epoxy powder is then electrostatically applied and heat-cured at temperatures exceeding 200°C. This creates a hard, non-porous finish that is chemically bonded to the steel.
The FBE coating provides a robust barrier against hydrogen sulfide ($H_2S$), methane, and various industrial chemicals. Its slight flexibility makes it more resistant to impact during transport and assembly compared to more brittle ceramic coatings.
One of the most significant benefits of the bolted design is the assembly method. Using a specialized jacking system, the tank is built from the top down at ground level. This eliminates the need for expensive cranes and high-altitude scaffolding, reducing project timelines by up to 50% compared to concrete or welded alternatives.
● Potable Water Storage: Our tanks are NSF/ANSI 61 certified, ensuring they meet the highest safety standards for human consumption without leaching harmful chemicals.
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● Wastewater Treatment: Ideal for aeration tanks, sedimentation tanks, and sludge holding, where resistance to biological corrosion is critical.
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● Bioenergy & Biogas: Used as anaerobic digesters to process organic waste into green energy.
● Fire Protection: Compliant with NFPA 22, providing reliable, large-volume water reserves for industrial complexes.
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Q1: What is the difference between Fusion Bonded Epoxy and Glass-Fused-to-Steel?
A: FBE is a high-performance polymer coating known for its impact resistance and cost-efficiency. Glass-Fused-to-Steel (GFS) is a ceramic coating with higher chemical resistance (pH 2-14) and surface hardness. FBE is typically favored for potable water and standard wastewater, while GFS is chosen for aggressive industrial effluents.
Q2: Can epoxy coated bolted tanks be used in extreme climates?
A: Yes. Our tanks are engineered for a wide temperature range and can be equipped with external insulation blankets to prevent freezing or maintain process temperatures in cold climates.
Q3: How do you ensure the coating is perfect before shipping?
A: Every single panel undergoes a High-Voltage Holiday Test (1100V+). If even a microscopic pinhole is detected, the panel is rejected or refinished, ensuring 100% discontinuity-free protection.
Q4: Is it possible to expand the tank capacity later?
A: Yes! Because the tanks are modular, we can often add additional rings to increase height and volume, provided the original foundation was designed to handle the added load.
Choosing Center Enamel means partnering with a manufacturer that has over 30 years of experience and 10,000+ successful installations in 100+ countries. Our epoxy coated bolted tanks offer the lowest total cost of ownership through reduced maintenance and a long, reliable service life.
Would you like a customized quote or a technical drawing for your next liquid storage project?
