Introduction
In today’s industrial automation era, a door isn’t just a door — it’s a critical component of efficiency, safety, and energy control. NHentrance’s High Speed Spiral Doors undergo rigorous national testing to meet and exceed these demands.
Wind Resistance – The True Strength
NHentrance spiral doors are tested by the National Center for Quality Supervision of Building Engineering:
- Standard pressure: 0.5kPa (equivalent to level 11 wind)
- Extreme resistance: Withstands 3.5kPa with no damage (Level 12 typhoon ~0.8kPa)
- Ideal for Exterior Doors, Underground Garages, Logistics Zones
Compared with PVC Door, Sectional Garage Door, Rolling Garage Door, spiral doors are structurally stronger and more durable.
Air & Water Tightness + Thermal Insulation
Energy loss equals money loss. Spiral doors by NHentrance provide excellent insulation:
- Air tightness: Only 0.62 m³/(㎡·h) at 10Pa pressure – Grade 8 (highest)
- Water tightness: Zero leakage at 700Pa – Grade 6
- Thermal U-value: 0.5 W/(㎡·K) – Top class insulation
Perfect for Cold Room Doors, Cold Chain, Refrigeration Doors, Freezer Doors.
Soundproofing
- Acoustic rating: Rw = 27dB, certified
- Ideal for office-facing warehouses, automotive centers, clean workshops
Safety & Smart Design
NHentrance integrates advanced safety features beyond the basics:
- Infrared sensors for obstacle detection and reversal
- Full intelligent light curtain covering the door entrance
- Spring buffer system + automatic reset limits
- Power-off fallback system to protect the motor
A real Automatic Roll Up Door with intelligent protection — far ahead of legacy systems.
Tested & Certified
All performance indicators have been tested and certified:
- Wind, air, water, thermal, and acoustic data by the National Construction Lab
- No vague marketing, just real data
When you buy a High Speed Shutter Door, Rapid Door, or High Speed Rolling Door, choose the one that backs claims with testing.
Recommended Industries
| Sector | Why It Fits |
| Garages | Anti-theft + speed |
| Cold Chain | Air-tight and thermally efficient |
| Industrial Plants | High-speed, high-frequency performance |
| Fire Stations | Fast open + redundant safety |
| Warehouses | Better sealing = better cost control |
Conclusion
A High Speed Spiral Door is more than a Roll Up Door or Garage Door — it’s a smart system for industrial access. NHentrance delivers proven performance, durable construction, and customized solutions for your facility.
