UNEDGED BIRCH
Thickness : 25 mm / 32 mm (cutting size 28 mm / 35 mm )
Width : min 100 mm without bark
Length : 3000 … 3300 mm ( 90% of loading ) , 2100 … 2900 mm ( 10 % of loading )
Moisture : fresh
One truck load : appox. 23m3
Quality E/E+E/A
One side without knots (E)
Other side without knots (E) or max. 1 knot / per 1000 mm (A1).
Other side without knots (E) or max. 1 knot / per 1000 mm (A1).
This quality include 10 – 20 % both sides without knots planks
Quality A/B
One side without knots ( E) or one knot /per 3000 mm (A2).
Other side knots are allowed (B)
Quality A/C
One side without knots (E) or one knot / per 3000 mm (A2).
Other side knots and discolouration are allowed (C)
SQUARE – EDGED BIRCH
Thickness : 25 , 32 ,38 mm
Width : 75 / 100 / 125 / 150 mm
Length : 1000… 3300 mm
Quality I
3 sides without knots.
In one side knots are allowed .
Quality II
knots are allowed;
discolouration and heart strip are not allowed.(only max 20 cm in one side)
Quality III
knots are allowed;
discolouration are allowed in one side of board
