Center Enamel: A Premier Manufacturer of High-Performance Welded Steel Tanks

For global industrial projects—ranging from oil and gas refineries to municipal water districts—the choice between welded and bolted steel tanks is critical. Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel), Asia’s leader in storage tank innovation, provides comprehensive engineering solutions across both domains.

While Center Enamel is world-renowned as the pioneer of Glass-Fused-to-Steel (bolted) technology, our Welded Steel Tank Division delivers the precision-engineered, monolithic structural integrity required for high-pressure, hazardous, and high-temperature storage applications.

The Center Enamel Advantage: Dual-Capability Engineering

By offering both specialized bolted systems and custom-fabricated welded tanks, Center Enamel functions as a one-stop-shop for complex industrial liquid containment.

1. Welded Steel Tanks: Monolithic Integrity

Our welded steel tanks are engineered as seamless, monolithic vessels. Utilizing advanced Submerged Arc Welding (SAW) and Gas Metal Arc Welding (GMAW), we ensure 100% joint efficiency (E=1.0), making these tanks the standard for:

● Petrochemical & Refinery Storage: Crude oil, gasoline, and hazardous chemicals.

● High-Pressure Applications: Gas-tight storage requiring strict adherence to ASME Section VIII.

● Severe Environmental Zones: Built for extreme seismic loads and high-wind shear environments where seamless structural integrity is mandatory.

2. Bolted Storage Tanks: Modular Efficiency

Center Enamel remains the industry leader in bolted solutions, including our flagship Glass-Fused-to-Steel (GFS), Fusion Bonded Epoxy, and Stainless Steel tanks. These systems are ideal for:

● Municipal Water & Wastewater: Rapid deployment, NSF 61 compliance, and low maintenance.

● Agricultural & Biogas: Corrosive-resistant interfaces for leachate and manure digestion.

● Modular Expansion: Projects requiring fast-track, bolt-together assembly without hot work.

Technical Benchmarks & International Compliance

Engineering consistency is at the core of our operations. Every tank leaving our facility, whether welded or bolted, is fabricated according to the most rigorous international standards.

Quality Lifecycle: From Raw Material to Commissioning

Center Enamel’s success is built on an unwavering commitment to the "Quality First" manufacturing lifecycle.

1.Material Selection：Verified Sourcing。

We source certified carbon or stainless steel plates (ASTM A36, A516, SS304/316L) with verified mill test reports, ensuring the foundational material is flaw-free.

2.Fabrication & Machining：Precision Forming。

Using CNC plasma cutting and heavy-duty plate rolling, we achieve exact tolerances for fit-up. This minimizes stress in the assembly phase, whether for welded joints or bolted panels.

3.Certified Welding Protocols：Monitored Welding。

For welded tanks, our certified (AWS/ASME) welders execute automated SAW processes, followed by 100% Non-Destructive Testing (RT/UT) of critical T-joints to ensure zero porosity.

4.Final Compliance Audit：Regulatory QA。

Every unit undergoes a final inspection against international standards (NSF, CE/EN1090, ISO 45001) before shipment to 100+ global markets.

Frequently Asked Questions (FAQ)

Q: Does Center Enamel manufacture both welded and bolted tanks?

A: Yes. While Center Enamel pioneered China’s bolted GFS technology and remains Asia's leader in that sector, our welded tank division serves clients who require monolithic, high-pressure, or high-temperature vessels engineered to API 650 or ASME standards.

Q: Which tank type should I choose for my project?

A: If your project requires high-speed installation, site flexibility, or modular expansion, our bolted tanks (GFS or Stainless) are the optimal choice. If your project involves high-pressure refinery storage, hazardous chemicals, or extreme temperature requirements, our welded steel tanks provide the necessary seamless, monolithic structural integrity.

Q: What international standards does Center Enamel follow?

A: We operate under a strict quality management system (ISO 9001, ISO 45001). Our tanks are designed to international codes including AWWA D103, API 650, ASME Section VIII, NSF/ANSI 61, NFPA, and CE/EN1090.

Q: Does Center Enamel provide project support outside of China?

A: Absolutely. With exports to over 100 countries, we provide comprehensive EPC technical support, ranging from structural engineering and design calculations to on-site installation supervision and commissioning support, ensuring your project meets local safety and environmental codes.

How Center Enamel GFS tanks are manufactured

This video provides an overview of Center Enamel's manufacturing facility and the GFS tank production process, highlighting the advanced technology that defines our bolted storage solutions.