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SOFTWOOD:
PINE |
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| NAMES: |
Pine tree |
| BOTANICAL NAME: |
Pinus silvestris
L. |
| ORIGIN AND SPREAD: |
Central-, Northern-
and Eastern Europe |
| MACROSCOPIC CHARACTERISTIC
FEATURES: |
Boarder of Annual
rings clear; transition from spring-wood to summer-wood within
the annual ring clear; sapwood yellowish white, heartwood reddish
yellow to brown (get darker) |
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IMPORTANT TECHNOLOGICAL FEATURES:
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Dry density (grams/cbm) 0,30 – 0,49 – 0,85
Volume shrinking tolerance (in %) 11,2
– 12,4
Pressure strength (Newton/qm) 35 – 55
– 94
Bending strength (Newton/qm) 41 – 100
– 205
Tensile strength (Newton/qm) 35 – 104
– 196
E-Module 6 900 – 12 000
– 20 100 |
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PROCESS
AND USE:
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Good to saw, to plane, to peal,
difficult to stain and varnish when tree has too much resin.
-----good to impregnate, good artificial drying ( danger of
blueness)
--- for inside and outside, paper
and pulp industry; special wood for masts and ----
----quite durable, ---- susceptible
fungus and insects
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| SPECIFIC
CHARACTERISTICS: |
Approx. 95 Pinus kinds are known,
Swedish and Polish Pine are to prefer
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