Whether these two sets of data are favorable or unfavorable will directly affect the safety performance of these roof tiles during the extremely cold winters in the north, as well as their structural integrity in the high-temperature environments of the south.<\/p>\n
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What Data Should Be Prioritized During the Procurement Process?<\/h2>\n
We recommend requesting that the supplier provide the test reports for those batches. Then, conduct a thorough review of this data. In particular, make sure to carefully checkTensile Strength<\/strong>Is it greater than or equal to 30 MPa?Elongation at Break<\/strong>It must also meet the requirement of being greater than or equal to 80%.<\/p>\n Oxygen Index<\/strong>These values must also meet the standard of 30 or higher. These metrics serve as hard indicators for determining whether a PVC formulation contains insufficient filler. If these values are low, it means the product\u2019s service life will be significantly reduced.<\/p>\n Once the shipment arrives, you can perform a simple spot check by cutting a 10-cm-long strip and bending it to a 180-degree angle; a\u5408\u683c sample will neither turn white nor break. Sand the surface lightly to check the consistency of the friction. When examined under a UV lamp, products with insufficient UV stabilizers will exhibit noticeable differences in fluorescence, making them easily distinguishable at a glance.<\/p>\n When it comes to quality inspection of Gaoyi PVC roofing tiles, it cannot be done simply by relying on the manufacturer\u2019s factory inspection report. As a buyer, you can only truly ensure quality control if you have a grasp of the most basic sampling inspection methods.<\/p>\n