Shijiazhuang Zhengzhong Technology Co.,Ltd(Center Enamel) is a premier provider of External and Internal Floating Roofs (IFR), engineered to API 650 Appendix C & H standards. Our systems are designed to mitigate the primary industry pain point—evaporative loss of "light ends"—by reducing VOC (Volatile Organic Compound) emissions by up to 99%. Featuring failsafe buoyancy and integrated lightning protection, our roofs ensure structural integrity for crude oil, gasoline, and hazardous hydrocarbon storage globally.
In 2026, oil field operators prioritize precision sealing to meet EPA Method 21 and local "Zero-Emission" mandates. Center Enamel transforms standard Oil Field Storage Tanks into high-efficiency, low-emission assets.
Technical Parameter | Engineering Specification | Operational Benefit |
Primary Seal | Mechanical Shoe / Resilient Foam | 99% reduction in rim evaporation losses. |
Compliance | API 650 Appendix C & H | Global regulatory and insurance acceptance. |
Material | Alloy 3003/5052 or ASTM A36 | Corrosion resistance in "sour crude" (H₂S) environments. |
Safety | ATEX-certified Shunts & RGCs | Dissipates static to prevent rim fires and explosions. |
Maintenance | Modular Bolted Design | Rapid on-site assembly without "hot work." |
The choice between an IFR and EFR defines the facility's risk profile. Center Enamel provides customized storage solutions tailored to the medium's volatility and local climatic conditions.
Feature | Internal Floating Roof (IFR) | External Floating Roof (EFR) |
Protection | Maximum: Shielded by a fixed roof. | Variable: Exposed to rain/snow. |
Evaporation Control | Eliminates wind-induced "stripping." | Dependent on secondary seal integrity. |
Product Purity | Zero risk of rainwater ingress. | Requires robust seal maintenance. |
Best For | Volatile liquids/High-purity chemicals. | High-volume crude/Refined products. |
Safety Advantage | Prevents flammable headspace mixtures. | Minimizes exposed fuel surface area. |
As a leading China Floating Roofs Manufacturer, Center Enamel incorporates failsafe engineering to protect the economic value of your stored resources.
● Failsafe Buoyancy: Engineered to remain level even if two adjacent pontoon compartments are punctured. Every compartment undergoes rigorous factory pressure testing.
● Emergency Drainage: EFR systems include high-capacity primary and emergency drains to evacuate 100-year storm events, preventing roof sinking.
● Lightning Protection: Multi-point Metallic Shunt Systems and Retractable Grounding Cables (RGCs) ensure low-impedance paths to ground, a critical safety requirement for oil field gatherings.
Our core competitiveness stems from thirty years of focus on high-performance containment.
● Precision Fabrication: Using CNC automated production, we eliminate the dimensional inaccuracies that cause roof binding or excessive seal wear.
● Modular Installation: Our bolted designs allow for rapid deployment in remote sites without the fire risks associated with on-site welding.
● Lifecycle Savings: The use of high-grade aluminum and stainless steel ensures a maintenance-free oxide layer, protecting against the aggressive nature of raw hydrocarbons and sour crude.
Q: How do Center Enamel floating roofs handle VOC compliance?
A: By maintaining constant contact with the liquid surface and utilizing Mechanical Shoe Seals, our roofs reduce Standing Storage and Working Losses by 98–99%, helping facilities stay within LDAR (Leak Detection and Repair) thresholds.
Q: What is the benefit of an aluminum internal floating roof (AIFR)?
A: Aluminum Alloy 3003/5052 offers a high strength-to-weight ratio and is naturally resistant to hydrocarbon corrosion, providing lightweight buoyancy that reduces the load on the tank's internal support.
Q: Can these roofs be retrofitted into existing tanks?
A: Yes. Our modular, bolted design is specifically engineered for easy integration into existing professional welded tank infrastructure with minimal facility downtime.
