Choose
language

Русский English

Grade II (BB)


  
One-piece face generally light and even in color. Occasional sound tight knots are permitted while open knots and defects are to be cut out and replaced with smalloval veneer patches before gluing. The veneer selected for the patches is of the same general color as the basic face veneer.


Categories of defects Permitted
Pin knots light Permitted
Sound intergrown knots Permitted up to an individual maximum diameter of 25 mm
with total quantity not more than 10 per sq. m
Other knots and knot holes Permitted up to an individual maximum diameter of 6 mm
with total quantity not more than 6 per sq. m
Total number of knots should not exceed 10 per sq. m
Repaired Defects (inserts) No more than 8 pcs. per 1 sq. m of surface
Double Inserts Not permitted
Closed checks Permitted for an individual maximum length up to 200 mm
and in number 2 per 1 meter of panel width
Open checks (patched) Permitted for an individual maximum width up to 2 mm
and for individual maximum length up to 200 mm
and no more than 2 per 1 meter of panel width
Maximum number of checks 4 per 1 meter of panel width
Irregularities in the structure of the wood Permitted
Hearth and discoloration No more than 30% of the surface
Defects at the edges due to sanding or sawing Permitted up to 4 mm from the edge
Glue penetration Permitted up to 2% of the surface
Sanding through Not permitted
Veneer overlapping in inner plies Permitted for an individual max. length up to 100 mm,
in number max. 1 per 1 meter of a panel width