... Ultrasonic flaw detecting machine H216-Channel Ultrasonic Flow Detecting Line for Steel CylinderTest channel: 16 channel Range: 0 to 9999 mm ... .1, 1.0, 2.0, 6.0 dB and locked. Test Modes: Pulse echo, dual element and thru-transmission Pulser: Tunable ... material, flow spinning, and heat treatment, etc.8. Couplant : water9. Test speed: 4min/pc (take the length of the cylinder as ...