Birch log wood

Log wood is long or short wood. It is chipped, chemically decomposed and converted to pulp.


  • Healthy, that is no infestation with fungi or insects
  • Saw-cut at both ends
  • Properly debranched (no branch stubs)
  • No forks
  • Long logs: 2 - 6 meters
  • Short logs: 1 meter (1 meter logs in Lenzing only in exceptional cases)
  • Minimum diameter with bark 10 cm (max. 10 % of 8 cm and 9 cm collateral)
  • Maximum diameter: 80 cm with bark
  • Free from metal and stone
  • Acceptance of all sizes in tons as absolutely dry with bark

Tolerance and rejection limits

For deviations from quality and dimension as defined by the Lenzing specifications for industrial birch wood, the following regulations apply:

  • Mildew and heart rot
    Deduction as reject (ballast) 20% and more, rejection of delivery.
  • Infestation
    Beginning white rot: Tolerance limit 5 %. 6% and more, deduction of 25% as reject (ballast). 80% and more, rejection of delivery.
  • Deficient form
    Forks, broken wood and branch stubs cause poor stripping, technical problems and loss. Tolerance limit 5%. 6% and up, price deduction of 10%.
  • Thinning material
    Cannot be processed for technical reasons. Deduction as reject (ballast) 20% and more, rejection of delivery
  • Delivery
    On princple, delivery must be free from other varieties. Red beech, ash and maple are tolerated as collateral. Any other varieties will be sorted out and not paid for. 20 % and more, rejection of delivery.
  • Manipulation logs
    Logs with a length of under one meter will be deducted as ballast and not paid for. Logs exceeding a length of 6 meters require cutting – deduction EUR 20 per ton absolutely dry with bark.
  • This specification is based on
    ÖST HHU Holzübernahmerichtlinien des Kooperationsabkommen FPP, February 1990 (Dok.Nr. FPHBA001). Brochure "Industrieholz" by Koop. FPP May 1992.