Divides the blocks by quality into the three grades (+++), (++), and (+) corresponding to the conditions stated in the tables. Refers to a protection treatment to the parts of the strips liable to be attacked by insects. The regulations for manufacture, characteristics and delivery conditions are fixed by ISO 1027.
| CSA Group | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | ISO 5320:1980 |
| Product Name | Solid wood parquet - Classification of fir and spruce strips |