The GB/T 2833-1996 standard specifies the test method for the flexural strength of ceramic tubes. The standard requires the accuracy of test equipment, such as bending testing machines, and details the main points of preparation of ceramic tube samples, including size and Appearance specifications. In the test process, the loading method, rate and measurement recording steps are clarified, and the calculation method of bending strength is given. Through this standard, the flexural strength of ceramic tubes can be accurately measured, which provides a basis for evaluating their performance under bending force. It is suitable for ceramic tube production, mass inspection and related engineering application scenarios to ensure the structural Reliability of ceramic tubes in actual use.