Do you know the grading standards for New Zealand radiata pine logs?

New Zealand radiata pine is undoubtedly the favorite in the timber market, with large quantity, wide radiation and many uses.

Generally speaking, they are classified into 4m, 6m and small A/medium A/large A, but do you know what the standard classification is?

New Zealand's radiata pine plantations produce predictable, high-quality logs for the timber market. This is possible due to excellent growing conditions and state-of-the-art forest management practices. Most New Zealand plantations are pruned at a young age, resulting in "knot-free" wood and confining knots to a small area near the wood's center. More than half of New Zealand's pine plantations are pruned three times within the first ten years of age, giving New Zealand's radiata pine its unique character.

New Zealand pine log grades and suitable uses

Pruned peeled wood: (high quality, large diameter, straight logs) for sliced ​​or peeled veneer,

Plywood and decorative panels.

Industrial peeled wood: (large diameter, straight unpruned logs) used to produce knotty grades of glulam

Boards and laminated veneer lumber.

Pruned saw logs: (large diameter, straight logs) used to produce knot-free and appearance-grade sawn timber.

and industrial grade sawn timber.

Small branch saw logs (S): used to produce high-strength lumber.

Large sawn logs (L): used to produce temporary building sawn timber, packaging materials and appearance components.

Long-pitch sawn logs: (from trees with widely spaced branches) suitable for clearwood furniture and joinery.

Yield rate.

Column material: (small to medium diameter, straight logs) with low twist grain, used for construction and

For ground contact use, chemical treatment is required.

Fiber and pulp logs: logs of good quality that do not fall into the above grades – used for paper production

Pulp and wood-based panel products.