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Keruing
Dipterocarpus lowii Hook.f.
Dipterocarpaceae
Kalup puteh (Sabah); Keruing sol (Malaysia); Sindur betul (Indonesia); Keruing batu (Indonesia); Resak butoh biawak (Brunei Darussalam); Keruing sol (Brunei Darussalam); Hagakhak (Philippines); Indonesian keruing (United States of America); Keroewing (Netherlands); Bagac (Philippines); Kruen (Sweden); Basilan (Philippines); Dau (Cambodia); Apitong (Philippines); Kanyin (Myanmar); Panau (Philippines); Yang (Thailand); Kruen (France); Keruing (France); Keruing (Sweden); Gurjun (India); Keruwing (Germany); Indonesian keruing (United Kingdom); Dau (Vietnam); Indonesian gurjun (United States of America); Keruing bunga (Indonesia); Keruing (Indonesia); Kruen (Italy); Keruing (Malaysia); Eng (Myanmar); In (Myanmar); Keruing (Italy); Indonesian gurjun (United Kingdom)
Dipterocarpus undulatus Vesque
It is a large tree up to 55 m tall. The bole is straight, up to 190 cm in diameter. The buttresses are up to 2.5 m high, spreading. This species is considered an oleo-resin tree.
Dipterocarpus lowii grows on well drained, usually sandy soils, in lowland dipterocarp forests, up to 400 m of altitude.
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vestured pits. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits medium, 7 to 10 micras. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Larger rays more than 4 seriate. Sheath cells. Silica bodies in the ray cells. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal ce Fibers with distinctly bordered pits.
Unrestricted
It has a distinctive smell of resin.
The sapwood is yellowish to grayish-brown and usually distinctly demarcated from the heartwood, which is grayish-brown to red-brown.
4
The grain is straight, sometimes interlocked.
The texture varies from moderately coarse to coarse but even.
Most of the species in the keruing group are rated as moderately durable. The resistance against dry wood insects is poor.
3
Silica Content: Silica presence is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0
0.75
0.85
10.9
6.4
Ease of Drying: Seasoning is reported as good with little degrade. It takes about 2 months and 3.5 months respectively to air dry 13 mm and 38 mm thick boards. Drying Defects: End-splits may develop.
UK-D; JP-3; US-T3-D2
1.7
1355
203800
693
76
112
743
It is easy to cross cut but slightly difficult to saw. Resin present in wood is reported to clog the saw-teeth.
Resin patches are usually seen on the surface of the veneer. Preheating is essential for good peeling.
Resin patches are usually seen on the surface of the veneer. Preheating is essential for good peeling.
Wood with high silica content quickly blunts saw-teeth.
Planing is reported to be easy.
Boring operations are fair.
This wood is difficult to nail.
The resin interferes with the gluing properties and the species that are too oily are generally not used.
This species is reported to be easy to finish. Resin exudation, if present, may difficult finishing.
EXTERIOR GENERAL, bridges, HOUSING GENERAL, flooring, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, port pillar, port storage
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