With 28 years of expertise in the field of industrial sliding doors, our team has become a trusted manufacturer exporting products worldwide and winning numerous accolades from global customers.
Overhead Industrial Sectional Door Specifications
| Max dimension | width * height 12000mm*8000mm |
| Power supply | 220±10%V, or 380V, 50/60Hz, IP55 |
| Opening/Closing speed | 20-40cm/s |
| Door panel thickness | 40mm/50mm/75mm/100mm/Back rib door |
| PU Density | 48±2kg/m³ |
| Wind resistance | 28-35m/s (Class 10-12) |
| Sound insulation | 24DB |
| Insulation level | 0.38W/M°C |
| Water tightness | 30Pa |
| K Value | 1.5W/M2.K |
| Thermal Conductivity | ≤ 0.033W/M.K |
| Color | Standard: white. Other colors can be customized. |
| Window | Can be added |
| Pedestrian Door | Can be added |
| Installation Tutorial | Yes, provided |
Requirements: Please provide exact doorway dimensions and the surrounding building wall clearance.
What You Will Receive
Why Choose Us?
Expert Engineering: Detailed CAD design solutions provided before production based on your measurements to ensure precision.
Certified Quality: Certified manufacturer providing safe, assured, and satisfactory services.
Competitive Pricing: Strategic factory placement to offer more competitive pricing for our clients.
Warranty Support: 18 months warranty and spare parts provided post-sale.
Technical Guidance: Installation technical support available with 24-hour advance appointment.
Company Profile
Our company covers 23,000 square meters, equipped with a professional technical team and advanced production equipment. As one of the earliest industrial door manufacturers, we provide 28 years of experience and one-stop solutions for diverse industries globally.
Products We Provide: High speed door, Fire shutter door, Sectional door, Wind resist steel roller shutter door, Aluminum roller shutter door, Transparent roller shutter door, Industrial sliding folding door, Steel(fire) door, Hangar door, Dock shelter, Dock leveler, and more.
Certifications & Partners
Certified with CE for quality assurance.
Fireproof products are CCC certified for reliable resistance.
Multiple patents demonstrating strong R&D capabilities.
Custom certification application handling available upon request.
Frequently Asked Questions
Q1: Is your product easy to install?
Yes, it is very easy to install. We pre-assemble the products so only screws are needed—no welding. Installation videos and manuals are provided, and on-site installation services are available if needed.
Q2: What is your leading time?
As a manufacturer with adequate stock, we maintain strict control over production. We can produce approximately 10 sets of doors per day to meet urgent project schedules.
Q3: How can I trust the payment and service?
We are a strictly certified boutique enterprise on Alibaba. For your peace of mind, payments can be processed through Alibaba to ensure your funds remain secure throughout the transaction.
Q4: Do you provide OEM services?
Yes, we provide comprehensive OEM services to meet your specific requirements.
Q5: What is your Minimum Order Quantity (MOQ)?
Our MOQ is 1 set, which is a great starting point for any project.
Q6: How long is the warranty period?
We provide an 18-month warranty for non-human damage, during which we will replace any broken parts.
Gerald Doors
