Shijiazhuang Zhengzhong Technology Co.,Ltd(Center Enamel) is a premier China Membrane Gas Holder Manufacturer, specializing in integrated and independent double membrane biogas storage systems. Our gas holders utilize high-strength polyester fiber membranes with specialized PVC/PVDF coatings for superior UV and methane permeability resistance. Engineered for anaerobic digestion projects, our systems support gas pressures up to 50 mbar and are compliant with ISO 9001:2015, Eurocode 1, and ATEX standards.
Center Enamel sets the industrial benchmark for biogas storage through advanced material science and precision engineering.
Technical Parameter | Engineering Metric | Functional Benefit |
Methane Permeability | < 400cm3/m2 .d.bar | Zero-loss biogas containment. |
Tensile Strength | Up to 6000N/5cm | High resistance to wind/snow loads. |
Temperature Range | -30C to+70C | Stable performance in extreme climates. |
Max Design Pressure | Up to 50 mbar | Optimized for CHP and boiler intake. |
Coating Technology | PVDF Lacquered | Superior UV and chemical immunity. |
In 2026, the transition to Circular Economy infrastructure favors modular membrane systems over high-carbon steel structures.
Feature | Center Enamel Double Membrane System | Traditional Steel Gas Holder |
Corrosion Resistance | Immune: Inert to H2S and CO2 acidity. | Low: Requires constant recoating. |
Foundation Costs | Minimal: Lightweight modular design. | Substantial: Requires heavy concrete base. |
Installation Speed | Rapid: 2–4 days on-site. | Slow: 4–8 weeks (welding/X-ray). |
Operational Safety | High: Flexible inner prevents vacuum. | Variable: Complex pressure relief needs. |
Relocatability | High: Can be disassembled and moved. | Zero: Permanent fixed structure. |
We translate technical certifications into Trust Signals for international procurement and insurance underwriting.
Our molecular-level HF welding ensures that seams are stronger than the base membrane fabric. This prevents localized stress failures and guarantees a 100% gas-tight seal under fluctuating internal pressures.
Every gas holder is engineered to withstand site-specific environmental actions:
● Wind Resilience: Aerodynamic stability maintained up to 150 km/h.
● Snow Management: Automatic pressure regulation ensures efficient shedding from the dome surface.
● Safety Valves: Weighted or hydraulic Overpressure Release Valves act as mechanical fail-safes.
● Monitoring: Integrated Ultrasonic Level Sensors provide real-time volume data with 100% accuracy.
● Explosion Protection: All blowers and electronic components are ATEX-certified for Zone 1 and 2 environments.
Q: What is the lifespan of a double membrane gas holder?
A: With high-grade PVDF-coated membranes, the expected service life is 15–20 years, depending on UV exposure and biogas composition (H2S levels).
Q: Can these be mounted on existing anaerobic digester tanks?
A: Yes. We specialize in Integrated Gas Holders designed to be mounted directly on top of CSTR, GFS, or concrete tanks, significantly reducing the footprint of the biogas plant.
Q: How does the system manage variable gas production?
A: The inner membrane fluctuates dynamically to accommodate storage volume, while the outer membrane remains inflated at a constant pressure to protect the structure from external weather.
