Double Membrane Roofs

Center Enamel provides dual-membrane roof solutions for anaerobic digestion processes and provides cost-effectively pressurized and sealed gas collection roof solutions.

The double membrane roof of Center Enamel adopts high-quality reinforced thermoplastic membrane materials, which can provide high gas permeability and ultraviolet degradation resistance, and provide durable, economical, and best-performing solutions for anaerobic digestion and biogas applications. During operation, the outer membrane remains permanently inflated, while the inner membrane will expand and contract in proportion to the biogas production. The operating characteristics of the double membrane roof make it a suitable choice for the application of the biogas pressurization process.

Advantages of double-membrane top cover

1. High safety factor. This product is very safe and reliable. The entire gas tank has been manufactured and tested in the factory. The quality is guaranteed. There is no guide rail, no lift piston, no weight, and no maintenance! The gas tank has no water seal/oil seal/spring, is not afraid of freezing, has no need to add Temperature, no need to adjust! No negative pressure will cause roof collapse or collapse, completely unmanned operation can be realized

2. No pollution. It does not produce a large amount of phenol-containing wastewater like wet gas tanks, causing secondary pollution.　

3. Easy and quick installation.

4. Cost saving. The contents of the cabinet can be fully utilized, which greatly simplifies and saves the civil construction cost of the base.

Shijiazhuang Zhengzhong Technology Co.,Ltd is a professional manufacturer dedicated to the design and fabrication of bolted storage tanks since 1989. Our products range includes Glass-Fused-to-Steel (GFS) tanks, fusion bonded epoxy tanks, stainless steel tanks, galvanized steel tanks and aluminum geodesic dome roofs. With professional enameling R&D team and more than 20 enameling patents, Shijiazhuang Zhengzhong Technology Co.,Ltd has become the leader in bolted tanks industry of Asia. Our products are certified to ISO 9001, CE, NSF/ANSI 61, WRAS, ISO 28765, LFGB, BSCI, ISO 45001 and other international standards.

Shijiazhuang Zhengzhong Technology Co., Ltd is not only the first manufacturer in China which produces Glass-Fused-to-Steel tanks, but also the most experienced professional bolted tanks manufacturer in Asia. The engineering & design, product testing and quality system of Center Enamel Glass-Fused-to-Steel tanks is in strict accordance with AWWA D103-09, OSHA, ISO 28765, NSF/ANSI 61, NFPA and other international standards. Center Enamel Glass-Fused-to-Steel tanks are wildly used in drinking / potable water, industrial effluents, municipal sewage, bio-energy, landfill leachate, agriculture and other applications. Until 2023, Center Enamel bolted tanks have been exported to more than 100 countries including USA, Australia, Canada, Malaysia, Indonesia, Russia, UAE, Panama, Brazil and South Africa etc., the superior tank quality and prompt service gains us worldwide recognition.

As an outstanding containment and cover system provider with more than 30 years of experience, Shijiazhuang Zhengzhong Technology Co., Ltd sincerely expects to establish long-term cooperation with the local partners throughout the world and make continuous contribution to the development of the industry.