1. Door body structure

Panel material: 201/304 stainless steel plate or colored steel plate (double-sided inside and outside)

Core Filler: High-pressure injection Polyurethane Rigid Foam (PU)

Foam density: ≥ 40–45 kg/m³

Door panel thickness: 75 / 100 / 120 / 150 mm (selected according to storage temperature)

2. Applicable range of temperature resistance

Chiller type: 0°C ~ 5°C

Freezer type: -18°C ~ -25°C

Cryogenic type: can reach -40°C / -60°C

3. Insulation performance

PU thermal conductivity: ≤ 0.022 W/(m·K)

Overall Door Heat Transfer Coefficient K Value: Typically≤ 0.45 W/(㎡· K) (depending on thickness)

4. Sealing and antifreeze

Door Seal: Low-temperature resistant EPDM or TPE sealing strips (maintain elasticity at -40°C)

Standard for the freezer model: door frame self-regulating electric heating (Anti-frost heater)

5. Hinges and Opening

Hinge type: three-dimensional adjustable heavy-duty stainless steel hinge (float-open, sinking-closed) design.

Opening Direction: Left opening / Right opening / Dual opening (customizable)

Optional features: heated anti-fog tempered glass observation window

6. Security configuration

Standard inside safety release

External anti-theft/anti-freeze lock cylinders

7. Opening dimensions

Single-leaf commonly used: width 700–1200 mm, height 1800–2400 mm

Common double-fan width: 1200–2000 mm (custom non-standard available)

Model selection recommendations:

Chamber temperature: ≤-18°C→ Choose the freezing type, with electric heating for the door frame

The opening width > 1.5m and requires forklift passage→ It is recommended to switch to a sliding door

Pharmaceutical/cleanroom → optional skirm-free or curved transition versions