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Baltic Birch Plywood: List

BALTIC BIRCH GRADE B

Outstanding Quality

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WOOD FLAWS & PROCESSING DEFECTS
GRADE B

PIN KNOTS

Allowed, not more than 3 per m2

SOUND INTERGROWN KNOTS LIGHT COLOR ONLY PERMITTED

Allowed up to an individual maximum diameter of 15mm with total quantity not more than 5 per m2

DARK KNOTS

Not allowed

KNOTS AND KNOTHOLES REPAIRS

Not allowed

CLOSED SPLITS

Allowed up to an individual maximum length of 100mm and in number, up to 1 per one panel’s running meter

OPEN SPLITS

Not allowed

IRREGULARITIES IN STRUCTURE OF THE WOOD

Allowed

HEARTH AND DISCOLORATION

Not allowed

DEFECTS AT EDGES DUE TO SANDING OR SAWING

Not allowed

GLUE PENETRATION

Not allowed

SANDING TROUGH

Not allowed

INNER PLIES VENEER OVERLAPPING

Not allowed

Baltic Birch Plywood: List

BALTIC BIRCH GRADE BB

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WOOD FLAWS & PROCESSING DEFECTS
GRADE BB

PIN KNOTS

Allowed

SOUND INTERGROWN KNOTS LIGHT COLOR ONLY PERMITTED

Allowed up to an individual maximum diameter of 25mm with total quantity not more than 10 per m2

OTHER KNOTS AND KNOT HOLES

Allowed up to an individual maximum diameter of 6mm with total quantity not more than 6 per m2 . Total number of knots should not exceed 10 per m2

REPAIRED DEFECTS (INSERTS)

Not more than 8 pieces per 1 m2 of surface

DOUBLE INSERTS

Not allowed

CLOSED SPLITS

Allowed up to an individual maximum length of 200mm and in number, up to 2 per one panel’s running meter.

OPEN SPLITS

Allowed up to an individual maximum length of 200mm, maximum width of 2mm, and in number, up to 2 per one panel’s running meter

IRREGULARITIES IN STRUCTURE OF THE WOOD

Allowed

HEARTH AND DISCOLORATION

Allowed up to 30% of surface

DEFECTS AT EDGES DUE TO SANDING OR SAWING

Allowed up to 4mm from edge

GLUE PENETRATION

Allowed up to 2% of surface

SANDING TROUGH

Not allowed

INNER PLIES VENEER OVERLAPPING

Allowed up to an individual maximum length of 100mm and in number, up to 1 per one panel’s running meter

Baltic Birch Plywood: List

BALTIC BIRCH GRADE CP

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WOOD FLAWS & PROCESSING DEFECTS
GRADE CP

SOUND INTERGROWN KNOTS LIGHT COLOR ONLY

Allowed

OTHER KNOTS AND KNOT HOLES

Allowed up to an individual maximum diameter of 6mm with total quantity not more than 6 per m2. Total number of knots should not exceed 10 per m2

REPAIRED DEFECTS (INSERTS)

Allowed

DOUBLE INSERTS

Allowed

CLOSED SPLITS

Allowed

OPEN SPLITS

Allowed up to an individual maximum length of 600mm, maximum width of 5mm, and in number, up to 5 per one panel’s running meter

IRREGULARITIES IN STRUCTURE OF THE WOOD

Allowed

HEARTH AND DISCOLORATION

Allowed

DEFECTS AT EDGES DUE TO SANDING OR SAWING

Allowed up to 4mm from edge

GLUE PENETRATION

Allowed up to 5% of surface

SANDING TROUGH

Allowed

INNER PLIES VENEER OVERLAPPING

Allowed up to an individual maximum length of 200mm and in number, up to 2 per one panel’s running meter

HOLLOWS, BUMPS, IMPRINTS, ROUGHNESS

Allowed, but slight, within the panel’s thickness tolerance

Baltic Birch Plywood: List

BALTIC BIRCH GRADE C

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WOOD FLAWS & PROCESSING DEFECTS
GRADE C

SOUND INTERGROWN KNOTS LIGHT COLOR ONLY

Allowed

OTHER KNOTS AND KNOT HOLES

Allowed up to an individual maximum diameter of 40mm.

REPAIRED DEFECTS (INSERTS)

Allowed

DOUBLE INSERTS

Allowed

CLOSED SPLITS

Allowed

OPEN SPLITS

Allowed up to an individual maximum width of 10mm

IRREGULARITIES IN STRUCTURE OF THE WOOD

Allowed

HEARTH AND DISCOLORATION

Allowed

DEFECTS AT EDGES DUE TO SANDING OR SAWING

Allowed up to 5mm from edge

GLUE PENETRATION

Allowed

SANDING TROUGH

Allowed

INNER PLIES VENEER OVERLAPPING

Allowed

HOLLOWS, BUMPS, IMPRINTS, ROUGHNESS

Allowed

©2016 by OTS Trading Company.

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