Description Items
Quality Requirements
Glazing Grade Domestic(GL)
Thickness
Tolerance
2.0mm
1.80-2.20
3.0mm
2.70-3.00
4.0mm
3.80-4.20
5.0mm
4.70-5.00
6.0mm
5.80-6.20
8-10-12mm
± 0.3
15-19mm
± 0.4
Cross
Bow
2.0-3.0
≤2.0mm/m
4.0-6.0
8.0-12.0
15.0-19.0
Edge
Quality
2.0-6.0
Flake; ≤4mm
Flare/Bevel; ≤3mm
Corners; ≤4mm
Flake; ≤6mm
Flare/Bevel; ≤4mm
Corners; ≤6mm
Flake; ≤12mm
Flare/Bevel; ≤6mm
Corners; ≤12mm
Over Score &Cutter Drag
None allowed
Size Tolerance
Glass Size
>2000mm
≤2000mm
<3mm
±3mm
± 2mm
3.0-6.0
± 3mm
± 4mm
± 6mm
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Squareness
For all thicknesses
Diagonal measurement difference/2 = 0.2% of the diagonal length
Linear Flaws
Scratch, Roll Scuff, Roll Mark, Stringer
No flaws visible at 1meter when viewed under normal room light
Non.
Continuous
Defects
Defect Size(d)
No.allowed per square meter
d ≤1.0mm
Allowed
1.0<d ≤1.5mm
1.5<d ≤2.0mm
0.5
d>2.0mm
Optical
Distortion
2.0-3.0mm
Zebra ≥40 °
4.0-19.0mm
Zebra ≥45 °