GB Duct | China's Largest HVAC Duct Board Factory
‹
›
No more condensation, no more fire risks, no more high maintenance costs.
✅ Class A/B1 Fire Rating: Meets EN 13501-1, ASTM E84 standards, zero flame spread
✅ Superior Thermal Insulation: λ≤0.022W/(m·K) at 25℃, eliminates energy loss
✅ Lightweight & Easy Installation: 1/5 the weight of galvanized steel duct, no heavy equipment required
✅ Moisture & Corrosion Resistant: Closed-cell structure, 100% waterproof, never rusts
Get in touch
24/7 Online Customer Support
Unique Technical Advantages
• High-Density Closed-Cell Foaming Technology:
German-imported foaming equipment produces uniform fine cells with density 45±5kg/m³, ensuring excellent thermal and acoustic insulation
• Double-Sided Aluminum Foil & Color Coated Steel Lamination::
Premium material featuring firm adhesion, excellent heat reflection and strong UV resistance
• Precision CNC Cutting:
Dimensional tolerance ≤±1mm, tight joints, air leakage rate ≤1%, far below industry standards
• Eco-Friendly Non-Toxic Formula:
CFC/HCFC-free, compliant with EU RoHS directive, green and sustainable
Available Customization Services
• Customizable thickness and length for duct boards
• Custom facing materials (aluminum foil, color steel, galvanized steel, stainless steel, etc.)
• Duct prefabrication service, processed into finished ducts according to drawings
• Professional technical support and installation guidance
• Custom packaging and labeling
```
Alibaba Group Global Headquarters- ByteDance Shanghai Headquarters
- Nanjing University
- Shanghai Grand Theatre
- Embassy of the United Arab Emirates in Beijing
- The Palace Museum
Why Choose Us
China's Largest HVAC Duct Board Factory | GB Duct, Established 1984
Rich Industry Experience
With over 40 years of experience in the HVAC industry, we have completed more than 10,000 projects worldwide.
Strong Production Capacity
We run 10 advanced automated production lines with a daily capacity of 30,000 sq.m, ensuring reliable quality and on-time delivery for large orders.
Professional Technical Team
Our experienced engineering team provides one-stop customized solutions and full-process professional technical support for all your project demands.
Competitive Factory Price
As a direct manufacturer without middlemen markup, we offer genuine factory direct prices, helping you save up to 20% cost compared with trading companies.
Comprehensive After-sales Service
We provide complete after-sales support, including on-site installation guidance, professional technical training and efficient problem solving anytime.
Get a Free Quote