ISO 17225-4-2021 固体生物燃料--燃料规范和等级--第4部分:分级木屑 Solid biofuels — Fuel specifications and classes — Part 4: Graded wood chips

This document determines the fuel quality classes and specifications of graded wood chips. This document covers only wood chips produced from the following raw materials (see ISO 17225-1:2021, Table 1):
• 1.1 Forest, plantation and other virgin wood;
• 1.2 By-products and residues from wood processing industry;
• 1.3.1 Chemically untreated used wood.
This document covers only wood chips, which are produced with sharp tools, and does not cover hog fuel, which is produced with blunt tools.nd edition 2021-02 Solid biofuels — Fuel specifications and classes — Part 4: Graded wood chips Biocombustibles solides — Classes et spécifications des combustibles — Partie 4: Classes de plaquettes de bois Reference number ISO 17225-4:2021(E) ？ ISO 2021 ISO 17225-4:2021(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2021 All rights reserved. Unless otherwise