GB/T 25997-2020
ActivePolyisocyanurate（PIR） products for thermal insulation
绝热用聚异氰脲酸酯制品
Application Summary AI generated
GB/T 25997-2020 specifies the technical requirements, test methods, and inspection rules for polyisocyanurate (PIR) foam products used in building thermal insulation. It applies to rigid PIR boards, panels, and preformed sections for insulating roofs, walls, floors, and HVAC systems in residential, commercial, and industrial construction. The standard ensures consistent thermal performance, dimensional stability, and fire safety for energy-efficient building envelopes.
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