8 mm wood pellets are granules made from dry pine sawdust, pressed without glue or chemical binders. The 8 mm diameter is intended for boilers and burners whose manual specifies 6-8 mm or 8 mm pellets: mostly medium and high output boilers, industrial burners and boiler houses. One kilogram gives about 4.7-5 kWh of heat, with up to 0.7% ash after burning.
How 8 mm differs from 6 mm. The raw material and calorific value are the same; the difference is in pellet diameter and length. An 8 mm pellet is slightly more massive, burns longer and produces fewer fines when poured. However, a domestic burner designed for 6 mm feeds it less reliably through the auger, so check your boiler manual before ordering. If your boiler takes both diameters, choose by price per tonne.
Quality. Ash content up to 0.7%, moisture up to 9%, mechanical durability about 98.8%, bulk density about 614 kg/m³. Batch documents (the producer's certificate and test report) are provided together with the delivery note.
Packaging. 15 kg bags made of clear polyethylene, for homes and topping up the hopper by hand; 67 bags per pallet, about a tonne, with pallets free of charge. Big bags of about 1000 kg are for boiler houses and warehouses with a forklift, at a lower price per tonne.
Price and delivery. Prices per bag and per tonne are in the table below. Delivery in Kyiv and across Ukraine with our own transport or by carrier; wholesale supplies for boiler houses and dealers under contract, by bank transfer with VAT.
When you need 8 mm pellets specifically
Boiler manual. The main source of the answer is your boiler or burner manual. If it says "6-8 mm pellets" or "8 mm", these pellets are suitable. If it says 6 mm only, choose 6 mm pellets: a longer, thicker pellet can get stuck in the auger and feed unevenly.
Boiler houses and industrial burners. For boilers from 50-100 kW with auger feed, 8 mm is the usual format: less dust when pouring from big bags and more stable combustion at high output.
Pre-season check. If in doubt, order a trial bag: a few days of boiler operation will show how the pellets feed and how much ash is left.
