Windows in steel or chromium steel

Steel windows Bühlmann are a safe bet when break-in resistant windows are called for in private and public buildings. Depending on the static and visual requirements and safety regulations (e.g. fire protection windows), Metallbau Bühlmann plans and manufactures windows in steel or chromium steel. Our steel windows provide improved break-in protection (up to and including resistance class 3) and are also equipped with bullet resistant window glass on request.

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Steel windows and fire protection

Fire protection windows in steel are supposed to also be aesthetically appealing. Profit from our many years of practical experience working with steel as a material, and let your ideas blend with our design knowledge.

Frame and sash material
  • Steel, insulated or non-insulated
  • Chromium steel 1.4301 insulated or non-insulated

  • Powder coated according to Qualicoat
  • Chromium steel, ground, grain 220-240

Building/element sizes
  • Depending on static and visual requirements
  • Maximum sash weight: 150 kg

Frame profiles
  • Face width: as of 30 mm
  • Building depth: 70 mm

Sash profiles
  • Face width: as of 24 mm
  • Building depth: 88 mm

Break-in resistance
  • Resistance classes 1 to 3 as per EN 1627-1630
  • Bullet resistant 1 to FB4 as per ENV 1627

Sound insulation
  • Up to 45 dB possible

Metallbau Bühlmann AG, Kreuzmatt 11, 6242 Wauwil
T 041 984 20 40, F 041 984 20 41,,