Pressure testing machine for building material detection

The invention relates to the technical field of building material detection, and particularly discloses a pressure testing machine for building material detection, which comprises a working frame, the working frame is provided with a fixing assembly for fixing a steel pipe to be detected; the device further comprises a first pressure applying part, and a servo air cylinder for driving the first pressure applying part to vertically slide is installed on the working frame. The fixing assembly comprises a second pressure applying part connected to the working frame in a sliding mode, and a switching mechanism is arranged between the servo air cylinder and the second pressure applying part. When the switching mechanism is located at the second station, the servo air cylinder drives the first pressure applying part and the second pressure applying part to synchronously carry out pressure detection on the steel pipe, and at the moment, the steel pipe can bear extra pressure detection driven by the second pressure a