MC <= 12%
Uniform lamellae width except on trimmed edges, lamellae length >= 15cm
Joints excluding breakout, gaps, holes and excess glue. Smooth sanding: grit#240. Glue: JAS-F4
PEFC-certified products
A grade: Vertical grain only, defect-free, very light color.
B grade: small amount of flat grain, pitch streaks, resin and reddish wood allowed; no knots, no blue stain, no heartwood and decay.
C grade: small sound knots, blue stain and heartwood allowed; no decay, no split and worm holes.
A-grade:
Thickness: 15mm
Width: 250~1000mm
Length: < 6000mm
Thickness: 18mm
Width: 250~1000mm
Length: < 6000mm
Thickness: 20/25/30/36mm
Width: 500/600mm
Length: 4200mm
Thickness: 20/25/30/36mm
Width: 250~1000mm (except 4200*500/600mm)
Length: < 6000mm (except 4200*500/600mm)
B-grade:
Thickness: 20/25/30/36mm
Width: 500/600mm
Length: 4200mm