GB/T 2835-1998 stipulates the acid resistance test method of pottery pipes. The samples of pottery pipes are placed in a specific acidic solution and soaked according to the specified time and temperature. The acid resistance of pottery pipes is judged by detecting the change of solution composition, observing the signs of erosion of the appearance and internal structure of the pottery pipes. The standard details the equipment required for the test, the configuration method of the acidic solution, the soaking operation process and the detailed rules for the evaluation of results. It provides specifications for the unified determination of the acid resistance of pottery pipes, and helps the safe use of pottery pipes in acidic media environments to ensure the stable operation of related engineering facilities.