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” …

An extensive range of birch plywood carrying very specific technical information including loading/ bending strength data. Plywood suited to your application Plywood sheets comprising birch veneers throughout which produces the most versatile of products. Suitable for applications; general construction, defined engineered structures, decorative panelling/furniture etc. Birch as a species is pale or yellow coloured and very dense with short wood …