Grading Standards Baltic Birch Plywood is graded with a face and back grade designation. The following face/back veneer grades are available from our warehouse facilities: B/BB: Single piece face and back veneer. Face veneers are considered clear and free of defects with a light-uniform color. The back allows 3-6 color-matched patches, which are oval in shape and egg-sized. Inner cores are …

Detailed grading rules and full quality requirements are described in GOST 3916.1-96 Simplified Russian plywood grading rules in accordance with GOST 10.55-71 and GOST 3916.1-96 are presented below: 10.55-71Grade BGrade BBGrade CPGrade C3916.1-96Grade IGrade IIGrade IIIGrade IVPin knotsNot more than 3 per square meterAllowedAllowedAllowedSound intergrown knotsAllowed with diameter not more than 15 mmAllowed with diameter not more than 25Allowed with cracks …

Grades Blatic Russian Birch GRADES BB/BB: Whole piece face and back veneer. Face veneers are graded clear and free of defects with a light-white uniform color. Inner cores are solid birch single piece veneers.BB/BB: Whole piece face and back. Tight pin knots may be present and inner cores are solid single piece veneers.BB/CP: Whole piece face and back. The “CP” …