MANUAL - Lichtgitter GmbH

Forge welded gratings with serrated bars are used in dirt intensified
areas of high pollution and slippery surfaces. They
are inspected in accordance with instruction sheet „BGI 181“
of the „Berufsgenossenschaft“ professional association. Serrations
are achieved by punching the top surface of bearing
bars. Serrated gratings are indicated by an „X“ before type designation
(see page 72 to 75).
Forge-welded gratings XSP Serrated type no. 1 & no. 11
Bearing bars XSP n° Pitches
Bearing bar pitch Cross bar pitch
25 x 2 mm 1
30 x 2 mm 1
40 x 2 mm 1
30 x 3 mm 1
40 x 3 mm 1
40 x 4 mm 1
30 x 2 mm 11
30 x 3 mm 11
40 x 3 mm 11
34,33 mm 38,1 mm
30 x 4 mm 1 34,33 mm 50,8 mm
Material S 235 JR ( ^= St 37-2)
Surface see pages 76 / 77
15
SP Forge-Welded Gratings
Forge-welded gratings with the particular bearing bar and
cross bar pitches shown below (special gratings) are necessary
for example, when small objects need to be prevented
from falling through the grating. Smaller gaps between bars,
can also be achieved by welding suitable continuous round
bars to the underside of the cross bars, in the bearing bar direction
and between each bearing bar (offshore-gratings for
specific offshore projects).
A minimum quantity of 300 m 2 is required for special gratings.
Forge-welded gratings as SP Special gratings
Bearing bars Pitches
Bearing bar pitch Cross bar pitch
25 x 2 mm 16,60 mm 24,0 mm
30 x 2 mm 21,64 mm 33,0 mm
40 x 2 mm 30,16 mm 38,1 mm
25 x 3 mm 33,17 mm 50,8 mm
30 x 3 mm 41,46 mm 76,2 mm
40 x 3 mm 45,30 mm 101,6 mm
Material S 235 JR ( ^ = St 37-2)
Surface see pages 76 / 77
Offshore-gratings on request
Forge-Welded Gratings