Manufacturing standards and maximum size deviations

Lattice flooring of ZRN production is made according to DIN 24531-1, DIN 24537-1, RAL-GZ 638. Also at production all provisions and norms of DSTU BV.2.6-75: 2008, DSTU BV.2.6 are considered. -52: 2008, SNiP III-18-75.

All lattice   decking must   meet the following general parameters :


Maximum permissible   twisting of the grille - 5 mm, for grilles smaller than 300x300 mm - no more than 2 mm.
a = max. 0.0025 x S

Maximum diagonal difference:
D1 - D2 = max. 0.01 x S (larger side)

Deviation in length and width: c;
e; f = max +0 / -4 mm
Cell pitch tolerances:
g = max. ± 1.5 mm
d = max. ± 4 mm (10 cells are measured)
Cut tolerances:
h; i = +8 / -0 mm

Tolerances and deviations for welded lattice flooring

All tolerances are for unloaded lattice& nbsp; decking:

The maximum deviation of the bearing strip is convexity
xt max. = 1/150 of the length of the bearing strip
At the lattice length > 450 mm - not more than 8 mm
With a lattice length of <   450 mm, no more than 3 mm

Maximum deviation of the bearing strip - concavity
xt max. = 1/200 of the length of the bearing strip
At the lattice length > 600 mm - no more than 8 mm
With a lattice length of <   600 mm, no more than 3 mm

The maximum deviation of the bearing strip is convexity
xq max. = 1/150 of the strip length for SP flooring;
at > 450 mm - not more than 8 mm;
at < 450 mm - no more than 3 mm.

Maximum deviation of the bearing strip - concavity
xt max. = 1/200 of the length of the bearing strip
At the lattice length > 600 mm - no more than 8 mm
With a lattice length of <   600 mm, no more than 3 mm

Transverse bar protrusion (for extruded gratings
transverse strip) outside the bearing strip
k max. = 0.5 mm

Deviation of bearing strips from vertical
p max. = 0.1 x H,
but not more than 3 mm

Maximum protrusion of the transverse bar above
несучою смугою
q max. = 1,5 мм

Maximum protrusion of the transverse strip   above the grille
s max. = 1,0 мм

 

Maximum   understatement of the   border strip
r max. = 1,0 мм

Deviation of the edge of the bearing strips from the vertical
t max. = ± 0,1 х Н