Plywood Grading Rules :Part 2 IWPA Grading Rules
THERE are a lot of plywood grading rules in the plywood industry ,but one of the most famous is the IWPA ,
The International Wood Products Association has helped to establish grading rules when there is a need identified internationally. International grading rules and standards listed below are voluntary standards that can assist in the importing wood products.
Voluntary Grading Rules for Lauan Doorskins
Jointly developed by IWPA, NWMA (National Woodwork Manufacturers Association) and TPMEA (Taiwan Plywood Manufacturers & Exporters Association). 8pp: Last revised, 1981.
Imported Rotary Cut Veneer & Platforms Standards
Standards jointly adopted by the IWPA Lumber Products Committee, The Malaysian Timber Industry Board, and the Malaysian Wood Moulding Council to establish quality levels for premium, standard and utility grades. Pdf only (or duplicate copies). 44pp. Last revised, 1987.
Tropical Hardwood Machined Lumber Products Grading Rules
You can find exact knowledge from https://www.iwpawood.org/page/IWPAGradingRules .