详情
3 sorts 1st *0%, 2nd *0%, 3rd *0% (3rd can be less)
(Not allowed - rot, blue, black knots, wane)
1st Class: without knots or little knotty go to the production of
wood-based materials for special purposes: aircraft, deck,
building, manufacturing
2nd grade: assortments of the middle part of the whip used to
produce lumber used in construction, engineering.
3rd grade: such timber may be obtained from any part of the whip.
Used both in the round and in sawn form. They are used in
engineering, construction, railway sleepers of them do, switch ties
railways, furniture. In coniferous timber number of healthy knots
are not taken into account.
Also ability suply hardwood as beech, oak, linden etc
