X-ray machines can't scan anything.

X-rays emitted by the X-ray machine can penetrate many objects, except those with high material density, such as iron, copper, gold, silver and other metals, barium sulfate and other mixed objects.

However, the current security inspection machine kv is very high, all above 150. Generally, the penetration of iron bottles is no problem unless lead is used. Lead is black under x-rays. But lead will inevitably trigger the automatic alarm of the machine.