China’s Leading Filter Tanks Manufacturer: Center Enamel Advancing Filtration Systems with Glass-Fused-to-Steel Technology

China’s Leading Filter Tanks Manufacturer: Center Enamel Advancing Filtration Systems with Glass-Fused-to-Steel Technology

As global demand for clean water, efficient wastewater treatment, and sustainable industrial processes continues to rise, filtration systems have become a core component of modern water and environmental infrastructure. At the heart of these systems are filter tanks, which must operate reliably under continuous flow, chemical exposure, and varying pressure conditions while maintaining long-term structural integrity.

Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) has established itself as China’s leading manufacturer of filter tanks, delivering high-performance solutions based on advanced Glass-Fused-to-Steel (GFS) tank technology. With nearly two decades of industry experience, close to 200 patented enameling technologies, and installations in more than 100 countries, Center Enamel provides filter tanks that combine durability, corrosion resistance, and engineering excellence for global water and industrial filtration projects.

As a leading storage tank manufacturer in China. At Shijiazhuang Zhengzhong Technology Co., Ltd., we excel in providing high-quality bolted steel tanks tailored for the diverse needs of fish farming. Our extensive range of bolted steel tanks includes Glass-Fused-to-Steel (GFS) tanks, fusion bonded epoxy tanks, stainless steel tanks, and galvanized steel tanks, each designed to offer exceptional durability, efficiency, and adaptability for aquaculture applications.

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The Critical Role of Filter Tanks in Modern Filtration Systems

Filter tanks are essential vessels used in a wide range of applications, including:

Drinking water treatment plants

Municipal and industrial wastewater treatment facilities

Desalination and seawater pretreatment systems

Industrial process water filtration

Agricultural irrigation water systems

Cooling water and circulating water treatment

These tanks house filtration media such as sand, activated carbon, anthracite, manganese sand, and other specialized materials. During operation, filter tanks are exposed to continuous hydraulic loads, abrasive media, chemical cleaning agents, and backwashing cycles, placing high demands on tank materials and coatings.

Conventional concrete or painted steel tanks often suffer from cracking, corrosion, coating failure, and costly maintenance over time. To overcome these challenges, Center Enamel has developed Glass-Fused-to-Steel filter tanks that deliver superior long-term performance.

Center Enamel: A Pioneer in Glass-Fused-to-Steel Technology

Founded in 2008, Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) is the first manufacturer in China to independently develop Glass-Fused-to-Steel tanks and today stands as the most experienced bolted tank manufacturer in Asia.

Center Enamel’s success is built on:

A professional enameling R&D team

Nearly 200 patented enamel formulations and processes

A large-scale advanced manufacturing base exceeding 150,000 m²

Strict quality management and international certifications

This technological foundation enables Center Enamel to deliver world-class GFS filter tanks that meet the most demanding filtration and water treatment requirements.

Glass-Fused-to-Steel Filter Tanks: Technology Overview

Glass-Fused-to-Steel technology involves fusing specially formulated glass to high-quality steel plates at temperatures between 820°C and 930°C. During this process, the molten glass chemically bonds with the steel surface, forming a uniform, inert, and highly durable coating.

The result is a material that combines:

The structural strength and flexibility of steel

The corrosion resistance and smoothness of glass

For filter tank applications, this combination offers exceptional performance under continuous operation and aggressive conditions.

Key Advantages of GFS Filter Tanks

Outstanding Corrosion Resistance

Filtration processes often involve exposure to disinfectants, oxidizing agents, varying pH levels, and cleaning chemicals. The glass coating of GFS filter tanks is chemically inert, providing excellent resistance across a wide pH range and preventing corrosion even in harsh environments.

Smooth, Non-Adhesive Surface

The smooth glass surface minimizes media adhesion, biofilm formation, and scaling. This enhances filtration efficiency, improves backwashing performance, and reduces maintenance requirements.

Superior Wear and Abrasion Resistance

Filtration media movement and backwashing can cause abrasion over time. GFS coatings exhibit excellent hardness and wear resistance, making them ideal for long-term filter tank operation.

Long Service Life

With a design life of 30 years or more, Center Enamel GFS filter tanks significantly outperform conventional coated steel or concrete tanks, offering lower lifecycle costs.

Modular Bolted Design for Efficient Installation

Center Enamel GFS filter tanks are designed with a modular bolted structure, which offers important advantages for filtration projects:

Fast and efficient on-site installation

No field welding, reducing safety risks

Easy transportation and handling

Flexible capacity and layout customization

Simple future expansion or relocation

This modular approach is especially valuable for municipal projects, remote sites, and large-scale EPC installations.

Engineering Excellence and Design Standards

Center Enamel filter tanks are engineered in strict accordance with internationally recognized standards, including:

AWWA D103 – Factory-coated bolted steel tanks

ISO 28765 – Vitreous enamel coatings

EN 1090 – Structural steel requirements

EUROCODE – Structural design and loading

Each filter tank is custom-designed based on:

Hydraulic flow requirements

Media type and loading

Operating pressure and backwashing cycles

Seismic and wind load conditions

This ensures structural safety, operational reliability, and long-term performance.

Applications of Glass-Fused-to-Steel Filter Tanks

Drinking Water Treatment

GFS filter tanks are widely used for:

Rapid sand filtration

Multimedia filtration

Activated carbon filtration

They meet stringent hygiene and safety requirements and can comply with NSF/ANSI 61 standards for potable water applications.

Municipal Wastewater Treatment

In wastewater treatment plants, GFS filter tanks support:

Tertiary filtration

Polishing treatment

Effluent reuse systems

Their corrosion resistance makes them suitable for aggressive wastewater environments.

Industrial Filtration Systems

Industrial facilities rely on GFS filter tanks for:

Process water filtration

Cooling water treatment

Chemical and pharmaceutical water systems

The tanks deliver consistent performance even under demanding industrial conditions.

Desalination and Seawater Pretreatment

In desalination projects, filter tanks play a critical role in protecting membranes. GFS tanks provide reliable pretreatment filtration with excellent resistance to saline and corrosive environments.

Roof Systems and Accessories for Filter Tanks

Center Enamel offers a full range of roof and accessory solutions to enhance filter tank functionality and safety, including:

Aluminum geodesic dome roofs

Steel roofs and covers

Access manholes and inspection hatches

Inlet and outlet nozzles

Ladders and maintenance platforms

These systems are engineered to meet project-specific operational and safety requirements.

Advanced Manufacturing and Quality Control

Center Enamel operates state-of-the-art production facilities equipped with automated enameling lines, precision forming equipment, and rigorous quality inspection systems.

Quality control measures include:

Coating thickness testing

Adhesion testing

High-voltage holiday testing

Dimensional and visual inspections

Each GFS filter tank panel meets strict quality criteria before delivery.

Global Project Experience and Recognition

Center Enamel GFS filter tanks have been successfully installed in over 100 countries, supporting water treatment and filtration projects across:

North America

Europe

Asia-Pacific

Middle East

Africa

Latin America

This global track record demonstrates Center Enamel’s ability to deliver reliable solutions under diverse regulatory, climatic, and operational conditions.

Environmental Sustainability and Long-Term Value

By providing durable, leak-free, and corrosion-resistant filter tanks, Center Enamel contributes to:

Reduced water loss and contamination

Lower maintenance and resource consumption

Sustainable water infrastructure development

The long service life of GFS filter tanks aligns with global sustainability goals and responsible resource management.

Comprehensive Project Support and Service

Center Enamel supports clients throughout the entire project lifecycle, including:

Technical consultation and system design

Engineering calculations and drawings

Installation supervision and training

Long-term technical support

This customer-focused approach ensures smooth project execution and long-term operational success.

Setting the Benchmark for Filter Tank Solutions

With pioneering Glass-Fused-to-Steel technology, advanced manufacturing capabilities, strict adherence to international standards, and extensive global experience, Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) has firmly established itself as China’s leading filter tanks manufacturer.

By delivering durable, corrosion-resistant, and high-performance GFS filter tanks, Center Enamel continues to support the development of reliable filtration systems worldwide, helping municipalities, industries, and communities achieve clean water, environmental protection, and sustainable growth.