GB/T 5169.31-2022

This standard provides general guidance on test methods for assessing the surface spread of flame on electric and electronic products, including materials and components. It is applied in the design, manufacturing, and quality control of products such as household appliances, industrial equipment, and electronic devices to evaluate fire propagation risks. The guidance helps engineers and procurement professionals select materials and designs that meet fire safety requirements, particularly in contexts where flame spread along surfaces could contribute to fire escalation.