WS hollow metal doors & frames

What it is

A hollow metal door is two steel face sheets bonded to an insulating core, closed with welded steel channels and reinforced for hinges, locks and closers. It hangs in a pressed steel frame anchored to the wall – the standard opening for factories, warehouses, schools, hospitals, offices and apartment buildings.

World Steel supplies the complete opening: door, frame, anchors and the hardware set, prepared and reinforced to the same schedule so it installs without site cutting. Doors and frames ship with the steel building or as a stand-alone package.

Why galvannealed steel

Galvannealed sheet is zinc-coated steel annealed at a higher temperature, so the zinc and iron combine into a zinc-iron alloy layer. It is harder than ordinary galvanizing, welds cleanly and has a matte surface that takes paint far better – the reason it is the standard for commercial doors.

• A40 coating (A60 for coastal or high-humidity sites)
• Cleaned inside and out before priming
• Baked-on rust-inhibitive primer, ready for the final colour

Construction

Duty levels

Wind-rated assemblies for hurricane regions and doors with glass lites, louvres, astragals and electrified hardware preparations are available on request.

Fire-rated openings

Labelled doors and frames are available from 20 minutes to 3 hours, tested to positive-pressure fire standards. The label applies to the assembly – door, frame, hinges, latching hardware and closer – so we supply rated openings as complete sets with the matching listed hardware.

A fire door is only as good as its installation: frames anchored to the wall type, clearances within limits and self-closing, positive-latching hardware.