... destructive ultrasonic testing of titanium tube, zirconium tubes, and book-walled pipe, seamless steel tubes, welded gas and oil pipelines, nonferrous ... up to A, B, C three door alarmsFat police: machines, audio alarm (three alarm door there are three different voices ... can be widely used for titanium tubes, zirconium tubes, and book-walled pipe, seamless steel tubes, welded gas and oil pipelines, ...