Shijiazhuang Zhengzhong Technology Co.,Ltd(Center Enamel) is a premier China Single Layer Carbon Steel Storage Tank Manufacturer specializing in API 650 and AWWA D100 compliant vessels. Utilizing high-grade ASTM A36 and A516 carbon steel, our single-layer tanks feature automated Submerged Arc Welding (SAW) and NACE-standard anti-corrosive coatings. Engineered for a 30+ year service life, these tanks provide a cost-effective, high-integrity containment solution for fire water, industrial chemicals, and light fuel oils globally.
The integrity of a single-layer tank depends entirely on the quality of its fusion. Center Enamel employs a "Zero-Leak" fabrication philosophy to ensure the primary containment barrier is monolithic and defect-free.
● Welding Certifications: Our operators are certified to AWS D1.1 (Structural Welding) and ASME Section IX. We utilize automated SAW to ensure uniform penetration and smooth internal surfaces.
● Non-Destructive Testing (NDT) Suite:
○ Radiographic Testing (RT): Verifies the internal structure of butt-welded shell seams.
○ Ultrasonic Testing (UT): Used for volumetric inspection and plate thickness verification.
○ Vacuum Box Testing: Mandatory for all floor-to-shell welds to confirm 100% airtight seals.
Coating failure is often a result of poor surface preparation. We manage adhesion through scientifically controlled grit-blasting.
● SSPC-SP10 / NACE No. 2: All plates undergo Near-White Blast Cleaning to achieve a 50–75 micron anchor profile.
● High-Build Epoxy Linings: Our standard for industrial water (pH 3 to 12). These linings provide a cross-linked barrier that prevents oxidation and iron leaching.
● Fusion Bonded Epoxy (FBE): For aggressive chemical applications, FBE provides a heat-cured finish with exceptional impact and chemical resistance.
Understanding when to utilize a single-layer design is critical for capital expenditure (CAPEX) optimization.
Feature | Single-Layer Carbon Steel Tank | Double-Layer (Jacketed) Tank |
Primary Use | Above-ground (AST), Fire Water, Non-Toxic Chemicals. | Underground (UST), Hazardous Fuels, Leak Detection. |
Cost Efficiency | High: Lower material and fabrication costs. | Moderate: Higher complexity and sensor integration. |
Secondary Containment | Requires external dyke or bund wall. | Integrated; outer jacket acts as containment. |
Inspection | Easy visual and NDT access to the shell. | Requires interstitial vacuum/liquid monitoring. |
Every Center Enamel tank is engineered for its specific GPS coordinates to ensure environmental survival.
● API 650: The gold standard for atmospheric storage, managing hydrostatic head and internal pressure to prevent shell buckling.
● ASCE 7-16: Site-specific engineering for seismic and wind loads. Our tanks are reinforced to withstand wind speeds up to 150 mph (240 km/h).
● ISO 9001:2015: Our globally audited quality management system ensures full material traceability and repeatable fabrication excellence.
Q: What are the benefits of single-layer carbon steel tanks?
A: They offer the best strength-to-cost ratio for above-ground storage of non-hazardous liquids like fire water or irrigation, allowing for easy visual inspections and lower initial capital expenditure.
Q: How does Center Enamel prevent corrosion in carbon steel tanks?
A: We utilize a dual-protection strategy: NACE-certified abrasive blasting to an anchor profile of 50-75 microns, followed by high-performance industrial epoxy coatings that provide a 20-30 year barrier against oxidation.
Q: Are these tanks suitable for fire protection water storage?
A: Yes, our single-layer tanks are frequently engineered to NFPA 22 standards, providing reliable, high-volume water storage for industrial and municipal fire protection systems.
