Tread Plates

A brilliant surface, narrow tolerances and customisable dimensions are Impol’s advantages when it comes to tread plate whose mechanical properties are adapted to the customer’s requirements and comply with the international EN, CE and ASTM standards. Given the customer’s wishes, tread plate can also be subject to further bending and cutting treatment or applied for decorative purposes.


Impol manufactures tread plate from selected 1000, 3000 and 5000 series alloys. The tread plate can be soft, semi-hard and hard, the surface can also includefive bar (Quintet), two bar (Duet) and diamond (Diamond) patterns. The company can either produce tread plate with standard dimensions which is usually in stock or tread plate customised to the customer’s dimensions with more stringent tolerances than the one listed in the standard in question.

Tread plate properties:

Alloy, temper, surface
Production: Slovenia Production: Serbia
Alloy (EN AW-xxxx) 5754, 3003, 1050 5754, 3003, 1050
Temper H114, H224, H244 H114, H224, H244
Surface finish Two bar (duet) Two bar
Five bar (quintet) Five bar
Diamond -
Available dimensions:
Production: Slovenia Production: Serbia
Thickness (mm) 1,50-5,00 1,50-5,00
Pattern height (mm) For thickness 1,50 mm: 0,50 or 1,00 mm For thickness 1,50 mm: 0,50 or 1,00 mm
For thickness 2,00 mm: 1,00 or 1,50 mm For thickness 2,00 mm: 1,00 or 1,50 mm
For thickness over 2,00 mm: 1,50 mm For thickness over 2,00 mm: 1,50 mm
Width (mm) 600-1250 1000-1500
Length 600-5000 600-6000
Paper interleaves On request for selected widths -

Intended use

Tread plate can be applied in:

  • transport industry,
  • machinery industry,
  • construction – for the manufacturing of staircases, swimming pool lining or shaft covers,
  • manufacturing of consumer products.

Technological manufacturing process

Tread plate is manufactured from rolling slabs subject to hot rolling to the prescribed thickness. Cooling thereof is followed by cold rolling and treading, followed by thermal treatment and cutting to the final dimensions. All these operations combined provide for the desired final tread plate dimensions and quality.

Compliance with international standards

    • EN 573-3 Aluminium and aluminium alloys - Chemical composition and form of wrought products – Part 3: Chemical composition and form of products
    • EN 1386 Aluminium and aluminium alloys - Tread plate - Specifications
    • EN 15088 Aluminium and aluminium alloys - Structural products for construction work - Technical conditions for inspection and delivery

      Sheets made of aluminium according to EN 573 and EN 1386

      Within the aforementioned certificates, a DGUV test was carried out on the ribbed sheet used as a floor covering on work surfaces where there is a risk of slipping. The results of the review were successful. GS - DGUV test can be used for ribbed sheet products for this purpose.

      Testing requirements: DIN 51130 (02.2014) and ASR A1.5/1,2. The results: 12,0 ° total mean of inclination angle, R 10 evaluation group of slip resistance. The test was made by: Institut für arbeitsschutz der Deutsche Gesetzlich Unfallversicherung – IFA, Sankt Augustin. Results applies till 2024. DGUV Test Certificate number IFA 1904098 (1904043).

      Declaration of Performance:

      Matej Žerjav, sales manager for standard products
      T: 00386 2 845 31 56