Standards give security
With gratings from GI-RO Technik you acquire a quality product. Gratings from our product range carry the recognized seal of approval and are subject to strict quality controls. All gratings that are manufactured by GI-RO Technik fulfill, depending on their field of application, different German and European standards.
The quality is right
Additionally, GI-RO Technik carries the recognized RAL-GZ 638 mark of quality for gratings. Accordingly, GI-RO Technik gratings fulfill the requirements of the quality and test regulations of the German Institute for quality assurance and certification. The admissible tolerances are specified within the regulations and you can be assured that at GI-RO Technik they will always be reliably observed.
| Standard | Description |
| DIN 24537 | Gratings |
| DIN 24531 | Steps made from gratings |
| DIN EN ISO 1461 | Hot-dip galvanization |
| RAL-GZ 638 | Seal of approval for gratings |
| AGI Arbeitsblatt H-10 | Gratings for industrial construction |
| DIN 1071/1055 | Roads and bridge-ways |
| DIN 18064 | Steps/handles |
| DIN 24532 | Permanent vertical ladders made of steel |
| DIN 31003 | Permanent work platforms including access ways |
| DIN 19580 | Drainage gutters/channels |
| BGR-181 | Main alliance of trade associations: Floor- coverings in workrooms with slippage risk |
| DIN EN 10025 | Hot-rolled products of unalloyed structural steels |
| DIN EN ISO 14122-2 | Machine safety, permanent access to machinery, work platforms and walkways |
| DIN EN ISO 14122-3 | Machine safety, permanent access ways to machinery, steps, step-ladders, and handrails/bannisters |
| DIN EN 1991-1-1 | Load-effect on bearing structures, dead-loads, and net loads for high-rise buildings |
| DIN 18800-1 | Steel structures: dimensioning, calculating and construction |
Quality and test regulations
These manufacturing and delivery tolerances are (according to the RAL-GZ 638) to be adhered to for the production of all GI-RO Technik gratings of following specifications.
- For bearing bars less than than 100 mm x 5 mm.
- Mesh width of maximum 68 mm and minimum 11 mm.
- Grating size maximum 2,0 m² where a thickness of not more than 2000 mm is allowed.
a = max. 0,0025 x s
c; e; f = max. +0 mm bis –4 mm;
g = ±1,5 mm
d = ±4 mm (measured over 10 spacings)
h; i = –0/+8 mm
Permissible tolerances for pressure-locked gratings
The distortions occurring due to load tolerances are not included.
Deviation for convex xt max = 1/200 in length for dimensions greater than 600mm, max. 8mm; dimensions smaller than 600mm; max. 3mm.
Deviation for concave ot max. = 1/200 in length for dimensions greater than 600mm, max. 8mm; dimensions smaller than 600mm, max. 3mm.
Deviation for convex xq max. = 1/200 in width for dimensions greater than 600mm, max. 8mm; dimensions smaller than 600mm, max. 3mm.
Deviation for concave oq max. = 1/200 in width for dimensions greater than 600mm, max. 8mm; dimensions smaller than 600mm, max. 3mm.
Angled position of the bearing and banding-bars p max. = 0.1H, but max. 3mm.
Top protruding cross-bar - q max. = 1.5mm.
Top protruding banding bar - s max. = 1mm.
Lower protruding banding bar - r max. = 1mm.
Angled cut of the bearing and cross-bar - t max. = 0.1xH, but max. 3mm.