At Shandong Jinxinda New Materials Co., Ltd., quality is more than a promise — it’s a proven process. As part of our rigorous quality control for Pre-Painted Galvanized Iron (PPGI) and Pre-Painted Galvalume (PPGL) steel coils, we conduct the T-bend test, a critical method to assess coating flexibility and adhesion.
At Shandong Jinxinda New Materials Co., Ltd., quality is more than a promise — it’s a proven process. As part of our rigorous quality control for Pre-Painted Galvanized Iron (PPGI) and Pre-Painted Galvalume (PPGL) steel coils, we conduct the T-bend test, a critical method to assess coating flexibility and adhesion.
The T-bend test measures the ability of a coating to withstand deformation without cracking or delaminating. During the test, a coated steel sample is bent tightly over itself (typically 0T to 5T) to evaluate how well the paint adheres to the substrate under stress. A 0T rating means the coating can withstand the most severe bending without failure — a mark of premium quality.
This test is essential for applications like roofing, cladding, and appliance manufacturing, where steel is often shaped and bent during installation. Poor coating flexibility can lead to premature failure, corrosion, or visual defects.
As a leading manufacturer of color-coated steel coils, Jinxinda ensures that each batch meets international standards for coating flexibility, adhesion, and corrosion resistance. Our advanced lab facilities and strict quality checks guarantee that our steel performs even in the most challenging environments.
Whether you're sourcing high-quality PPGI coils for export or local use, our T-bend test ensures you receive steel that delivers lasting performance and visual appeal.
Learn more about our steel products and testing standards: Sliding Windows