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Sectional Garage Doors — Wholesale Manufacturer

Our best-selling export line. Double-skinned steel panels injected with polyurethane foam give you the insulation, rigidity and finish quality your market expects — at factory-direct cost.

White insulated sectional garage door on a stone-clad home — wholesale from Sunotech China

Specifications

PanelDouble-layer galvanized steel, 0.4–0.5mm skins, PU foam core
Panel thickness40mm / 50mm
InsulationR-9 to R-16 (U-value from 1.1 W/m²K)
Widths8ft – 18ft (2.4m – 5.5m), custom on request
Heights7ft – 10ft standard, up to 14ft available
SurfaceWood-grain embossed, stucco, smooth; 20+ standard colors
Hardware2" or 3" track, torsion springs rated 15,000–50,000 cycles
OptionsWindows, pedestrian wicket door, wind-load reinforcement, high-lift / vertical-lift track
PackingSeaworthy export carton + steel pallet, hardware boxed separately

Customization for Your Market

Sectional garage door panel cross-section showing polyurethane insulation core
Panel cross-section — PU foam core between galvanized steel skins
Garage door hinges and rollers hardware close-up
Hinges, rollers and brackets — hardware included in every kit

Applications

Residential new-build and replacement, townhouse developments, light commercial units. Supplied as complete kits — door, track, springs, opener-ready — so your installers work from one box.

Get sectional door pricing

Send sizes + quantities for a 24-hour factory quote.

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