Beveled Glass 3mm clear float glass

NO.

NOVAL Beveled mirror quality standard

Grade A

1

Spot fault such as bubble or smear

< 0.4 mm

Permissible

0.4 - 0.5 mm

Within 20cm from sides of Big-sized Mirror

Within 15cm from sides of Middle-sized Mirror

Within 8cm from sides of Small-sized Mirror

    Permissible up to

B   2

M  1

S   0

> 0.50mm

Not Permissible

2

Scratch

Width ≤0.1mm

Length ≤50mm

Same position above

Permissible up to

B  4

M  2

S   1

3

Edge Loss

Not permissible

4

Rough Particle

Not permissible

5

Scalloping on Bore Edge (No effect on safety and installation)

≤3 mm

6

Missing grinding

5%Perimeter of Big-sized Mirror

2%Perimeter of Middle-sized Mirror

Not permissible on Small-sized and Model Mirror

B  2

M  1

S   0

7

Stain

Not permissible

8

Ripple and Color Bottom

Not permissible when straight eye-inspection

9

Grinding Trace

Not permissible

10

Transparent Spot

Not permissible

1

1

Shell

≤0.3mm

12

Scratches in grooves

2lines width ≤0.3mm / 0,5 m

13

Irregular cloudy on etching structure surface

Not permissible when straight eye-inspection

14

Hanger Position Tolerance

Note: Glue should be neutral and vertical strip on hanger

≤3 mm

15

Note: Forbid to clean lacquer with corrosive cleaner abluent. (e.g. acidic or alkaline liquid)

Not permissible