Classification and Marking 4.1 Classification - 4.1.1 Color and workmanship 4.1.2 Wall thickness of the main profile 4.1.3 Drop weight impact of the main profile 4.1.4 Insulation performance of the main profile 4.2 Marking 5 Requirements 5.1 Number of chambers Main profile section cavity There are no less than 4 chambers to ensure the energy saving of the product from the structure. 5.2 Quality of the main profile The mass of the main profile per meter length should not be less than 97% of the nominal mass. 5.3 Physical and mechanical properties 5.4 Other indicators The appearance, size and deviation of the profile, linear deviation, heat transfer coefficient of the main profile, and harmful substance limit indicators should comply with the requirements specified in GB/T 8814.
T/SXJP 070-2023 history
2023T/SXJP 070-2023 Unplasticized polyvinyl chloride (PVC-U) multi-chamber high weather-resistant profile