Impact Test Of Fire Pipes

Cut a sample with a length of about 100 mm from any position of the plastic-coated fire pipe, and perform an impact test according to the provisions of Table 2 under the environment of (20±5) ℃ to observe the damage of the inner coating. During the test, the weld should be in the opposite direction of the impact surface, and the test results should meet the requirements of 5.9.