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.