Dipterocarpus spp. (Family: Dipterocarpaceae)
A medium hardwood. The trees are large and can be found abundantly in low-lying, undulating land and hill dipterocarp forest. Logs can be easily identified as their ends are usually coated with a layer of resin. There are 30 species of Keruing in Malaysia.
- Density: 690 - 945 kg/m3
- Heartwood: red-brown, ageing to dull greyish-red
- Sapwood: distinct, lighter in colour
- vessels exclusively solitary
- vertical canals diffuse but mostly in short tangential lines, rarely in long tangential series
- rays of two distinct sizes
- resinous odour
- patches of resin may be found on the surface and end grain of the wood
This timber is suitable for heavy construction, posts, beams, joists, rafters, truck body construction, container flooring and when treated, suitable for railway sleepers, harbour works, bridges, power-line poles and telegraph poles.