ultrasonic flaw detecting machine ultrasonic flaw detecting machine116- Channel Ultrasonic Flow ... reference)4. Product material; 30CrMo,35CrMo,34CrMo4,37Mn5. Cylinder wall thickness; 4mm-14mm6. Weight≤300Kg 7.Tested flaw; ... crack, fold, interlayer, etc. of cylinder’s internal wall resulted by raw material, flow spinning, and heat treatment, ... the cylinder as 2000mm) ultrasonic flaw detecting machine