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Stair treads

Stair treads - P and SPStair treads are made according to DIN 24531-1 out of both forge-welded gratings and pressure-locked gratings. Bearing bars 30 x 3 mm and 40 x 3 mm in size are used for selected stair treads. On the front side of treads there is a welded anti-slip perforated stepping edge which reduces the slip hazard and also increases the static load capacity of the tread and optically emphasizes its front side. Treads are provided with side plates 3 mm in thickness with holes for bolts. The dimensions of treads and pitches of holes in the side plate are shown in the table below.


Schodišťové stupně - P a SP



Len. L
 
+0
[mm]
 

Width B
 
+5
[mm]
 

a
[mm]
 

b
[mm]
 

c
[mm]
 

d
[mm]
 

e
[mm]
 
Permis.
load
[kN]

Weight
[kg/
pc]
 
-3 -5
600 240



30x3



 
55 70 120 85 1.5 5.2
270 55 70 150 85 5.8
305 55 70 180 90 6.5
800 240 55 70 120 85 6.7
270 55 70 150 85 7.5
305 55 70 180 90 8.3
1000 240 55 70 120 85 8.2
270 55 70 150 85 9,2
305 55 70 180 90 10,2
1200
 
240
40x3
 
55 70 120 85 11.7
270 55 70 150 85 13.2
305 55 70 180 90 14.7


Different dimensions upon demand.

For the fastening of stair treads we supply:


Hexagonal head bolts M 12 x 35 ISO 4016 (DIN 601)
Hexagonal nuts M 12 ISO 4032 (DIN 934)
Washings for steel structures   DIN 7989

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Forge-welded gratings, pressure-locked gratings, stair treads, perforated metal planks, spiral staircases, GRP gratings and ladder rungs. Various material variants (steel, stainless steel, aluminium) with various surface finishes.
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