QUALITY DESCRIPTION and INSPECTIONS OF  RAW PLYWOOD

QUALITY DESCRIPTION and INSPECTIONS OF  RAW PLYWOOD
Allowed defects
Defects BB C C+ CC
Knots
sound knots with diameter not bigger than
60 allowed allowed allowed
max. number per sqm
7
2.unsound knots with diameter not bigger than
25 allowed allowed allowed
max. number per sqm
7
3. open knots with diameter not bigger than
6 30 allowed allowed
max. number per sqm
10 up to 2/sqm
II. cracks one per panel with max. length in mm of
1. closed cracks 250 mm 250 mm not allowed 250 mm
2. open cracks allowed with max length in mm of
350 mm 350 mm not allowed 350 mm
with max. width in mm
5 5 not allowed 15
max. number per running meter
3 3 not allowed 5
III. imprints and dents allowed with a max. depth of 0,5 mm
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