Effective wastewater management has evolved from an operational necessity into a critical pillar of global sustainability. Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) serves as a premier strategic partner for industries and municipalities, providing high-integrity Welded Carbon Steel Wastewater Tanks designed for high-stress environmental containment.
To facilitate rapid decision-making for engineers and procurement officers, the following technical matrix summarizes our core capabilities.
● Capacity Range: 10 m3 – 60,000 m3 (Customizable Diameters & Heights)
● Primary Material: ASTM A36 / Q235B High-Strength Carbon Steel
● Coating Options: Fusion Bonded Epoxy (FBE), Epoxy Phenolic, or Glass-Fused-to-Steel (GFS)
● Welding Standards: AWS D1.1 / API 650 Compliance
● Standard Compliance: ISO 9001:2015, AWWA D100, API 620/650
● Testing Protocols: 100% NDT (Vacuum Box, RT, or UT) & Hydrostatic Testing
At our 150,000 m2 advanced manufacturing facility, we engineer industrial assets using rigorous, technology-driven protocols to ensure long-term performance in corrosive environments.
Longevity is determined by the bond quality between the steel and its coating.
● The Standard: We achieve an Sa2.5 (Near-White Metal) finish according to ISO 8501-1.
● Why it Matters: This automated process removes mill scale and contaminants, creating an optimal "anchor pattern" that increases coating adhesion by over 30%.
● The Technology: Our facility utilizes MIG (Metal Inert Gas) and Submerged Arc Welding (SAW) for deep-penetration, slag-free seams.
● Compliance: Every structural weld is executed by certified technicians under AWS D1.1 or API 650 protocols.
● QA: We utilize Non-Destructive Testing (NDT), including Radiographic Testing (RT) and Ultrasonic Testing (UT), to verify 100% penetration and zero porosity.
For industrial wastewater—where leakage is a legal liability—welded steel provides a superior "monolithic" seal compared to traditional concrete.
Metric | Welded Carbon Steel Tanks | Reinforced Concrete |
Sealing Integrity | 100% Hermetic Seal: Fusion welding creates a leak-proof metal envelope. | Conditional: Susceptible to seepage through "cold joints" and micro-cracks. |
Seismic Resistance | High: Ductile properties (ASTM A36) allow the tank to flex without fracturing. | Moderate/Low: Brittle nature leads to "spalling" during high-vibration events. |
Construction Time | Moderate: Efficient modular plate assembly; no curing time. | Slow: Dependent on formwork and a mandatory 28-day curing period. |
Maintenance | Minimal: High-build Epoxy/FBE liners prevent internal decay. | High: Requires periodic crack injection and expensive waterproofing. |
● Application: UASB Anaerobic Reactors
● Volume: 2,534m3 Total (2 units 1,267m3 each)
● Engineering Insight: UASB reactors require high height-to-diameter ratios (9.17 m × 19.2 m). Center Enamel utilized GFS technology to withstand the volatile fatty acids (VFAs) inherent in leachate.
● Application: AO (Anoxic/Oxic) Biological Treatment
● Volume: 24,424 m3 (Total of 10 units)
● Configuration: Includes large-scale units up to 5,088 m3 ( 32.87 m).
● Strategic Advantage: The modular construction of these tanks allowed for rapid deployment in a seismically active region, providing a rigid yet ductile solution for urban sewage remediation.
A: In high-salinity environments (e.g., brine or produced water), a welded carbon steel tank typically lasts 15 to 25 years. This is achieved using high-build Epoxy Phenolic coatings ($400$–$600$ microns) and integrating Sacrificial Anodes (Cathodic Protection) to mitigate electrochemical corrosion.
A: Welded tanks provide a Hermetic Seal without gaskets. In applications involving aggressive chemical solvents that might degrade EPDM or Nitrile gaskets, the 100% continuous weld bead is the only zero-leakage guarantee.
A: We follow a multi-stage Quality Control (QC) protocol. Bottom-to-shell joints undergo Vacuum Box Testing to detect microscopic leaks, while shell seams are verified via Radiographic Testing (RT) to ensure compliance with API 650.
Would you like me to prepare a customized technical proposal or a CAD drawing for your specific wastewater project requirements?
