CNG cylinders don't blow up like this. They are built to handle a much higher pressure than 200 bar. Usually LPG and oxygen cylinders fitted by super ustaads blow.
If CNG cylinders could blow up like this , we would have the highest number of cases in Karachi since Karachi has more cars than all other regions combined. Recently a couple of buses blew up only because they had lpg cylinders fitted. Why is that Cylinders only blow up in small cities where there is less awareness about safety.