Biogas Dual-Membrane Digester

• Customization: Available
• After-sales Service: Quick Response and Provision of Technical Support
• Warranty: 15 Years
• Type: Inverted Membrane
• Material: PVDF|PTFE|ETFE
• Forming Way: Blow Molding
• Application: Structural Components, Buildings
• Material Properties: High Temp Resistance
• Markets Served: Building & Construction
• Customized: Customized
• Usage: Exterior
• Color: White
• Surface Finishing: Finished
• Transport Package: Standard Export Package
• Trademark: zhongjianbeiyu
• Origin: China
• HS Code: 7308900000
• Production Capacity: 10000000 Square Metres / Year

Product Description

I. Introduction
   

Corrosion resistance: Fluorocarbon fiber membrane and other materials resist corrosion from gases like hydrogen sulfide and ammonia. The reverse - hanging structure keeps the metal skeleton outside, extending the steel structure's lifespan and cutting maintenance costs.
Good structural performance: Lightweight yet high - strength membrane material, 1/10 - 1/30 the weight of traditional ones, enables large - span column - free coverage. Prestressed tensioning and external steel support ensure high stability against wind and seismic loads.
Excellent sealing: Hot - melt welded membrane materials with "secondary node" sealing for near - zero harmful gas emissions.
Self - cleaning: PVDF coating reduces dust adhesion; rain can clean it.
Convenient construction: Factory - processed, modular on - site installation, ideal for old sewage tank renovation with low load on original structures.
Good economy: Lower material, construction, and maintenance costs, long service life (membrane over 15 years, steel up to 50 years).
Strong adaptability: Fits various tank shapes via CAD modeling. Can have active units or channels for maintenance.
Versatile functions: Adjustable light - transmittance, shading to prevent algae, and combined with secondary sealing for better odor collection.

II.Our company's flagship membrane materials: PVDF, PTFE, and ETFE.

PVDF Membrane Material
A composite made by coating PVC on polyester fabric, then adding a 100% PVDF surface layer. Key features:
Self-cleaning, cost-effective, easy to install
Lifespan: 25+ years
Optional TiO  coating for enhanced self-cleaning
Fire-resistant (Class B1)
Thickness: 0.6-1.2mm | Light transmission: 6-12% | Strength: 3,500-12,000N/5cm
Widely used in construction for durability and performance.
 

PTFE Membrane 
A high-performance composite made by coating PTFE resin on fiberglass fabric. Key advantages:
Extreme durability (30+ years)
Fireproof (Class A1 non-combustible)
Self-cleaning & UV-resistant
80% light transmission | 73% heat reflectivity
Thickness: 0.6-1.2mm | Strength: 3,500-12,000N/5cm
The revolutionary material enabling modern permanent membrane structures.
 

Ethylene Tetrafluoroethylene (ETFE) is a copolymer known for its outstanding properties. The membrane is typically less than 0.20mm thick, making it extremely lightweight. It boasts a 95% light transmittance, earning it the nickname "soft glass."
Key Advantages:
High Strength & Flexibility - Resistant to tearing, with over 400% elongation.
 Durability - Excellent weather and chemical resistance, with a melting point up to 200°C (392°F).
Energy Efficiency - Maximizes natural light, reducing energy costs.
Self-Cleaning - Dirt washes away easily with rain, requiring cleaning only about every 5 years.
 Eco-Friendly - Fully recyclable, either reused for new ETFE membranes or repurposed into other products.
 Long Lifespan - Lasts over 35 years, making it ideal for permanent and retractable roof structures.
ETFE is the perfect choice for modern, sustainable architecture!
 

III.Company Profile - China Construction Northern Construction Engineering Co., Ltd.
China Construction Northern Construction Engineering Co., Ltd. (CCNCE), a National High-tech Enterprise under the Baikal Group, specializes in industrial membrane structures and environmental protection projects. We integrate R&D, design, construction, production, and operation to deliver end-to-end solutions for clients.

Core Strengths

--- Authoritative Certifications
Grade 1 General Contracting Qualification for Membrane Structure Engineering
Grade 2 Construction Engineering General Contracting Qualification
ISO Certifications: Quality Management, Environmental Management, Occupational Health & Safety, and Energy Management Systems
Recognized as a "National High-tech Enterprise" and "Zhongguancun High-tech Enterprise"
---Technological Expertise & Innovation
Core technologies include air-supported membrane photovoltaic systems, steel membrane storage facilities, and air-supported membrane venues, with a maximum span of 300 meters.
---PVDF Membrane Material: Over 25-year lifespan, featuring B1 fire resistance, self-cleaning, corrosion resistance, 6%-12% light transmittance, and tensile strength up to 12,000N/5cm.
--- Large-Scale Production Capability
Two R&D and production bases in Inner Mongolia (82,000 m²) and Jiangsu (42,000 m²), with an annual processing capacity exceeding 10 million m² of membrane materials.
Trusted by leading clients including China Minmetals, PowerChina, Three Gorges Group, Baosteel, and other central/listed enterprises. Domestic market share exceeds 30%.
--- Efficient & Eco-Friendly Solutions
Air Dome Storage System: Completed in 15 days, 30-year service life, 50% cost savings, remote intelligent control, and fully enclosed dust-proof design.
Steel Membrane Structure Storage: Lightweight (1.5kg/m²), large span (30-300m) without intermediate supports, short construction period, and low maintenance costs.
--- Comprehensive Service Assurance
Strict quality control system covering production, installation, and commissioning.
Professional after-sales team offering 24/7 technical support and maintenance.

Applications

 ---Industrial Facilities: Coal storage, material yard enclosures, soil remediation, cold storage, and grain silos.
 Public Infrastructure: Sports stadiums, exhibition centers, transportation hubs.
---Environmental Projects: Waste gas treatment, intelligent dust removal systems, and integrated photovoltaic energy solutions.

Why Choose Us?

Safety & Reliability: Resists 18-level wind gusts, 300kg/m² snow load, and 100% enclosed structure.
Green & Smart: Energy-saving design with remote-controlled intelligent systems.
Cost Efficiency: 50% lower costs compared to traditional steel structures and reduced long-term maintenance expenses.

Contact Us
 
Headquarters:
16th Floor, Big Data Center, Ordos City, Inner Mongolia, China
No. 253 Ruike Road, Huanke City, Yancheng, Jiangsu, China
Choose CCNCE-Where Technology Meets Quality-to Build Efficient, Sustainable Spaces for the Future!
 

IV.Quality Guarantee
Customization Process for PVDF Tensile Fabric Tent Structures (Tension Membrane Architecture)
1. Customer Consultation
Customers reach out to inquire about our products and services.
2. Project Assessment, Design, and 3D Rendering
Our team consists of numerous experienced product consultants. They will promptly and professionally answer your questions, thoroughly understanding the requirements and details of your project. We will then design a customized professional 3D plan, taking into account the characteristics of your site and your specific needs.
3. Budget Calculation and Contract Sign - off
Once you approve our proposed design, our engineering estimators will calculate a competitive price. Upon your agreement, we will finalize the commercial contract.
4. Production
Production commences immediately after order confirmation.
5. Trial Assembly
Prior to product dispatch, we will conduct a trial assembly to ensure the product meets specifications.
6. Shipping
Our products are distributed both domestically and internationally. Delivery is typically arranged within 25 days after order confirmation.
Important Notes
Installation: The majority of our products utilize screw - based or snap - fit splicing methods, enabling straightforward and rapid installation. In case you encounter installation difficulties that cannot be resolved through communication, we can deploy professional technicians to provide on - site installation guidance.
After - sales Service: We offer an end - to - end service package, covering pre - sales consultation, extended warranty options, maintenance support, technical advice, and after - sales follow - up. Should you have any issues, our support team is always at your service.


FAQ
Q1. How many years have you been in this line?
We've been in this line for more than 20+ years.

Q2. How to control the quality of the product
We have national level engineers ,We control products quality under the instruction of national standards.

Q3. Is it acceptable to the customer's OEM, ODM requirements?
We welcome OEM ,ODM order as well.

Q4.Can I visit your factory in person?
Of course, welcome.

Q5. What is the Payment Term in CCNCE. ?
40% Deposit to be made After signing PI, 60% before shipment.

Q6. What is the Normal Product Time for Standard Design?
30- 40 days after deposit received.

Q7. What's the Material of the Cover, Can it Last Long Time?
The cover material is PVDF/PVC/PTFE/ETFE. 
PVDF can last more than 15 years.
ETFE/PTFE can last more than 25 years.
It have fabric inside so it very strong,not easy to be torn.

Q8. Can I Expand the Membrane Size or Replace the Accessories in the Future?
Sure. All of our membrane structures building and accessories are made into modularity. You can expand the membrane structures building length by adding bay distance(the distance should be in original length) unlimitedly. Also, the accessories can be replaced into a new one, we will offer affordable price of components.

Q9. Our company's advantages?
We are membrane cloth manufacturer, we offer factory price which without any extra fee like commission from trade company. So you will enjoy the most cost-effective product and membrane structure buildings solution from CCNCE.

Q10.Do You Offer Customization Service? Can You Print Our Logos on the Membrane?
Yes. We are professional OEM. We can surely help you design as long as you tell us your specific requirements.You can also print custom logos on the membrane fabric according to your requirements.

Q11.Does your Membrane struture buildings be able to Installed Repeatedly? What is the Life Span?
Our Membrane struture buildings can be assembled and dismantled easily and repeatedly with small transportation size. The life span of steel structure can reach 30 years, and 5-8 years for PVC fabrics depending on different conditions of usage.

Q12.What's the total price include Freight?
The total price is based on the design of the product and the requirements of the customer, all subject to the final calculation.

Q13.Can you offer designing service?
Yes, we have a professional design engineers team. We could design full solution drawings as per your requirements. The software we used here are Auto CAD, PKPM, MTS, 3D3S, Tarch, Tekla Structures(Xsteel)V12.0.etc