Standard quality is recommended for those areas where economic efficiency has priority. It is ideal for making stairs, doors, long elements, etc.
Cracks are accepted on the end of twice the width of the piece and the knots bonified.
Density : 700 kg / m3 in care eficienta economica are prioritate. Este ideala pentru confectionarea de scari, usi, elemente lungi, etc.
Se accepta 1-2 noduri sanatoase, crapaturi de capat cat latimea piesei si oglinzile.