QUALITY DESCRIPTION
TYPE A
Allowed
- Sort by color;
- Healthy knots up to 5 mm in diameter;
- Tiny brown lines.
Not allowed
- Mechanical defects;
- Cracks;
- Red core; blue spots.
TYPE B
Allowed
- Without sorting by color;
- Healthy knots with a diameter up to 10mm;
- Closed, black, knots up to 5 mm in diameter.
- Red core up to 5-30% of the shield area.
Not allowed
- Mechanical defects;
- Cracks; blue spots.
SPECIFICATION
| type | Solid |
| species | Beech |
| quality | A/B |
| glue | class D3/D4 |
| thickness | 18-45 mm. |
| width | 100-1300 mm. |
| length | 700-3000 mm. |