Insulated Steel Sectional | Garage Door | JuSen

Product Overview

Engineered for demanding commercial and industrial environments, this sectional garage door features a steel construction with a thermal-insulated core to maintain interior temperature stability. Each unit is designed for automatic electric operation with remote control, meeting the rigorous performance standards required for frequent daily use in warehouses, loading docks, and service centers.

Key Specifications

Available Options

• Standard widths: 2500 mm, 3000 mm, 4000 mm, 5000 mm; custom sizes up to 6000 mm
• Finish colors: RAL 9002, 9006, 7016, 5010, or custom RAL match
• Hardware options: chain hoist operator, manual release, emergency disconnect, safety photo eyes
• Glass options: vision lites in 300×300 mm or 400×600 mm with double-glazed insulated units

Applications

• Commercial warehouse loading bays requiring thermal separation from cold storage areas
• Industrial service centers with high-frequency vehicle traffic and temperature control needs
• Automotive repair shops needing insulated doors to reduce heating and cooling costs
• Retail distribution hubs where door operation must be remote-controlled for efficiency

Customization Capabilities

Panel dimensions, spring configuration, track type, and operator voltage can be tailored to specific project requirements. Custom RAL colors and window placement are available for orders of 50 units or more.

Packaging & Shipping

Each door is disassembled into labeled components, wrapped in protective film, and packed in reinforced plywood crates for export. Shipping via 20-foot or 40-foot containers, with full documentation including packing list and bill of lading.

Why Choose Us

• Certified to ISO 9001:2015 for manufacturing quality control
• Direct factory pricing with no middleman markups
• Sample orders accepted with lead time of 15-20 working days

Frequently Asked Questions

What is the thermal insulation performance of the polyurethane foam core?

The high-density polyurethane foam core provides an R-value of 12.5, reducing heat transfer by up to 70% compared to non-insulated steel doors. This is suitable for environments requiring consistent internal temperatures, such as cold storage anterooms or heated workshops.

Can the door be customized for a non-standard opening width of 5500 mm?

Yes, the maximum width is 6000 mm, and custom widths between 2500 mm and 6000 mm are accommodated by adjusting panel widths and spring torsion calculations. A minimum order quantity of 10 units applies for non-standard sizes.

Is this door suitable for use in a commercial bakery where temperature fluctuations occur?

Yes, the insulated steel construction and polyurethane core maintain thermal stability, making it appropriate for bakery loading areas where ambient temperature varies between 10°C and 40°C. The corrosion-resistant powder coating withstands humidity from cleaning processes.

What is the typical lead time for a container order of 50 units?

For standard sizes and RAL colors, production lead time is 20-25 working days after deposit confirmation. Custom colors or window additions add 5-10 working days. Shipping time depends on destination port, typically 25-40 days by sea.

How is the door packaged for international ocean freight to prevent damage?

All panels are individually wrapped in polyethylene foam and bubble film, then packed vertically in plywood crates with internal bracing. Hardware, springs, and operators are boxed separately. Each crate is banded and labeled with handling instructions in English and Chinese.

Get A Quote

Contact us for customized quotation, volume pricing, and project specifications. Response within 24 hours.