Product Description
Other Common Names: Bibiru, Sipiri, Kevatuk (Guyana), Beeberoe,
Demerara groenhart, Sipiroe (Surinam) Distribution: Commercial
quantities mostly in the north central portion of Guyana but also
found in Surinam and in the Venezuelan Guiana. It has also been
reported from the Maroni Region of western French Guiana and from
northern Brazil. The Tree: Grows to a height of **0 ft with
diameters up to *0 in., commonly *6 to *4 in. in diameter with
heights of **0 ft. Boles are cylindrical, straight, and clear for
*0 to *5 ft with only moderate taper; usually basally swollen or
with low buttresses. The Wood: General Characteristics: Heartwood
varies from light to dark olive green or blackish often with
intermingling of lighter and darker areas; not sharply defined from
the pale yellow or greenish sapwood. Texture fine and uniform;
grain straight to roey; lustrous; odorless and tasteless when dry.
Weight: Basic specific gravity (ovendry weight/green volume) 0.*0
to 0.*1; air- dry density *2 to *0 pcf. Mechanical Properties:
(First set of data based on the *-cm standard; second on the *-in.
standard.) Green (*2) *0, **0 2, **0 9, **0 *2% *6, **0 3, **0 *3,
**0 Green (*0) *0, **0 3, **0 *0, **0 *2% *5, **0 3, **0 *3, **0
Janka side hardness 1, **0 lb for green material and 2, **0 lb at
*2% moisture content. Drying and Shrinkage: The wood dries very
slowly with a marked tendency to check and end split; however,
warping is not serious and the total amount of degrade is not
excessive. Lumber over 1 in. in thickness should be air-seasoned
prior to kiln-drying. Kiln schedule T*-C2 is suggested for 4/4
stock and T*-C1 for 8/4. Shrinkage green to ovendry: radial 8.8%;
tangential 9.6%; volumetric *7.1%. Movement in service is rated
medium. Working Properties: Moderately difficult to work with hand
or machine tools because of its density, dulls cutting edges rather
quickly but finishes to a fine smooth lustrous surface. Turns
easily and takes a high polish. A moderately good steam-bending
wood. Gluing gives variable results. Durability: The heartwood is
rated highly resistant to attack by decay fungi and is also rated
as highly resistant to attacks by marine borers but this may vary
from one locality to another, particularly in brackish waters.
Highly resistant to attack by dry-wood termites. Preservation:
Impermeable to preservative treatments. Uses: Marine and ship
construction, lock gates, docks, industrial flooring, vats, filter
press plates, piling, heavy construction, turnery, specialty items
(fishing rods, billiard cue butts
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Guyana |
Model No: |
bk
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(Negotiable)
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