ANQING TEST HALL · FURNACE No. 3 · LIVE FEED

Inside the Furnace.

Scroll to run the test. Every degree below is measured, not imagined — the BS 476 Part 22 standard curve, rendered as you descend.

STANDARD TEMPERATURE CURVE · SCROLL TO CLIMB

0 MIN · 25°C30 MIN · 842°C90 MIN · 945°C180 MIN · 1051°C

ELAPSED · MINUTES

000

The counter runs while you watch — three hours of certified endurance, compressed into a single scroll.

MINUTE 030 · 842°C

Intumescent seals expand to twenty times their volume, closing the gap the steel has not yet widened.

MINUTE 090 · 945°C

Mineral wool holds the unexposed face below 140°C — the temperature a human hand could still touch.

MINUTE 180 · 1051°C · SHUTDOWN

Burners off. Hose stream: 34 kPa against a door that just held a furnace for three hours. It holds again.

INTEGRITY MAINTAINED · INSULATION MAINTAINED · PASSED

WHAT THE TEST PROVES

The Rating Is Not a Claim. It Is a Record.

Every certified leaf descends from doors that passed this exact sequence. Your submittal certificate traces to a furnace log in Anqing.

Build to a test this severe — or build to something less.

Share your drawings, door schedules and technical requirements with our engineering team for detailed submittals and factory-direct quotation.