Airtightness test equipment and airtightness test method

摘要

PROBLEM TO BE SOLVED: To reduce the amount of a detection gas used when testing the airtightness of a pipe and to stabilize the accuracy of the test of the airtightness of the pipe. An airtight test apparatus (1) includes a pipe fixing portion (20) for fixing a pipe (T1) at a predetermined position, and a hood (10) for covering the pipe (T1). The hood (10) is rotatably attached to the hood upper surface portion (11) extending along the stretching direction of the pipe (T1) and the hood upper surface portion (11) in the circumferential direction of the pipe (T1). Each has a pair of hood side surfaces (12) that extend along the stretching direction of the tube (T1). [Selection diagram] Fig. 1