https://en.wikipedia.org/wiki/Outline_of_forestry#Branches_o...

Primary processing of forest products (PPFP) means the initial processing of any wood or other plant material products harvested from the forest to prepare it for shipment for further processing or to market. Primary processing is the first step in processing both primary forest products that are made from wood material ...
http://www.oregon.gov/LCD/docs/rulemaking/ForestProcessingCo...
https://www.daf.qld.gov.au/forestry/industry-profile/timber-...
https://en.wikipedia.org/wiki/Wood_processing

Secondary Processed Wood Products Markets
https://www.unece.org/fileadmin/DAM/timber/docs/rev-00/06.pd...

== BEGIN QUOTE ==

The volumes traded of SPWPs are small compared to
primary-processed wood products, such as roundwood,
sawnwood, wood-based panels and pulp and paper.
<...>

== END QUOTE ==


Глобальные аспекты развития лесного сектора экономики
https://cyberleninka.ru/article/n/globalnye-aspekty-razvitiy...

== BEGIN QUOTE ==

<...> Согласно статистике ООН, товары, произведенные из древесины, подразделяют на четыре группы: продукты первичной обработки древесины, продукты вторичной обработки древесины, товары первичной обработки древесного волокна, изделия из бумаги и картона.

К первой группе относят круглые лесоматериалы, пиломатериалы, листовые древесные материалы и древесную щепу. Во вторую группу входят мебель из древесины, столярные и плотничные изделия. Третья группа включает целлюлозу, бумагу и картон.

К четвертой группе относят тарный картон, картонные коробки и полиграфические изделия, включая книги и газеты.

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Note added at 6 hrs (2018-01-11 02:21:44 GMT)
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Sorry, I forgot to underline something to make it easier to compare the Russian and English texts:

== BEGIN QUOTE ==

The volumes traded of SPWPs are small compared to primary-processed wood products, such as roundwood, sawnwood, wood-based panels and pulp paper. <...>

== END QUOTE ==


Here’s a link to Reverso.net:

http://context.reverso.net/перевод/английский-русский/primar...

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Note added at 8 hrs (2018-01-11 04:14:39 GMT)
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There is even an abbreviation for that term, PPWP, though it seems to be rarely used.

When a tree is cut down and then sawn into various lengths and shapes without further processing, I would call those: raw timber products