Originally Posted by Mustang65
I believe the tank's end of life date is stamped into the metal ring of the tank
Of the 5 each 20# tanks I just inspected there was no expiration date. They all did have "Must be requalified after 12 Years" stamped on the neck ring. Some of the (I presume) newer tanks had "Must be requalified after 12 years of manufacture date".
So it doesn't appear there is an age expiration on 20# tanks. I can't speak for the 30# tanks because I have none in my possession. vic