Koninklijke Houthandel G. Wijma & Zonen B.V.


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Freshly cut Bilinga is yellow to orange-yellow, turning to an orange-red to golden brown colour. The 30-50 mm thick sapwood is clearly distinguishable and is pale yellow to white.

Properties of this timber species


  • Botanical name: Nauclea diderrichii / Nauclea gilletti
  • ATIBT name: Bilinga
  • Other names: Badi, Opepe


Quality requirements

  • Bilinga is listed in the Dutch norm NEN 5493 'Quality Requirements For Hardwoods In Road Construction Works, Hydraulic Engineering Works And Other Structural Applications’.


Strength class

  • Bilinga quality class Category 3/Tropical/NEN 5493 is classed in strength class D35 (NEN-EN 338)



  • Bilinga is used for a diversity of construction purposes, for both inside and outside, fendering, jetties, bridges, bridge decks (minimum of 40 mm thick)
  • Other applications include park benches, fences and gate



  • Resistance to fungi: class 1 (very durable)
  • Resistance to insects: Termites class D (sapwood and heartwood very durable), Marine borers class M (moderately durable)



  • (660)-750-(900) kg/m3 at 12% moisture content
  • Fresh 900-1150 kg/m3

source: Houtvademecum © 2010 Centrum Hout Almere, 10e herziene druk

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