GB/T 20027.2-2025 is the second part of the series of standards for the determination of Breaking strength of rubber or plastic coated fabrics, which specifies the measurement method of hydraulic method. The standard specifies the test principle, operation steps, instrument requirements and result calculation and representation of the method. It is suitable for the Breaking strength detection of various rubber or plastic coated fabrics. It can unify the detection method and ensure the accuracy of the data, and provide a reliable technical basis for the mass evaluation and application selection of such fabrics.