Grade B can be covered with colorless varnish as well as with toned one. It compromises the outer rigor and beauty of natural solid wood.

 

Other DC grades:

 

Combination of grades of the face and revers sides gives a general grade of blanks (A/B - A/C).

Dimension components (DC). Grade A/B

Dimension components (DC). Grade A/C

Dimension components (DC). Grade B/C

 

Lengths are divided into 4 groups:

Very long-1201mm-1600 mm
Long-601mm-1200 mm
Middle length-451mm-600 mm
Short-301mm-450 mm
Standard workpieces thickness -22.0 and 24.0 mm.
Standard width-95.0 and 75.0 mm. 

 

Other thickness and width are available upon agreement.

 

 

STANDART REQUIREMENTD FOR QUALITY OF DC

 

Category

Surface A

Surface B

Surface C

Surface appearance and wood color

Uniform appearance and color, only small deviations of wood tone are allowed

Strict color matching is not required, differing areas are allowed

Strict color matching is not required, differing areas are allowed

Wood grain

Regular grain only

Irregular grain is allowed

Irregular grain is allowed

Sound ingrown knots

Single knots are acceptable in diameter up to 5mm

Allowed in diameter up to 10 mm spaced evenly on the surface

Allowed in diameter up to 30 mm spaced evenly on the surface

Pin knots (diameter up to 3 mm)

Single pin knots are allowed

Allowed

Allowed

Black knots, partially ingrown and open knots

Not allowed

Allowed single in diameter up to 5 mm

Allowed in diameter up to 15 mm

False heartwood

Not allowed

Single strips or areas of light-toned false heartwood are allowed

Allowed without limitation

Dried water streaks

Not allowed

Firm light-toned streaks in size up to 5x50mm are allowed

Allowed

Mineral srteaks

Insignificant amount is allowed

Allowed

Allowed

Nonthrough cracks or checks

Not allowed

Fine nonthrough checks in length up to 50 mm are allowed

Fine nonthrough checks in length up to 50 mm are allowed

Ingrown bark

Not allowed

Not allowed

Allowed

Decaymould,wormholes

Not allowed

Not allowed

Not allowed

Sanding defects

Not allowed

Not allowed

Allowed single areas in length up to 50 mm

Fractures, tore-outs and other processing defects

Not allowed

Not allowed

Single allowed