Steel 72 are 3AA code tanks. These code has been in effect for many decades and it covers a large portion (if not the vast majority) of industrial cylinders.
IMHO changing the codes just like that would be an economic disaster for the gas industry in this country.
The probability of such a change is so unlikely...
IMHO changing the codes just like that would be an economic disaster for the gas industry in this country.
The probability of such a change is so unlikely...