... 5.Max penetration 50mm(Fe) X ray unit- Portable X-ray flaw detector is made up by x-ray generator, controller, connecting cable, ... and exposing time can be preset, the timer is digital. The controllers have over-voltage protection, over-current protection ... .- We have over 20-year-experience on industrial x-ray machines, and the x-ray machines we produce have smaller dimensions, lighter weight, best ...