Sounder wrote:renoun wrote:spatman wrote:hp130:
Don't these PST tanks need some EXTRA SPECIAL CARE to pass hydro?
Yes, there is a pre-stretching procedure which PST has provided all the hydro companies which is to be done when hydroing their tanks. Trouble is, they don't all remember/know to do it. If they don't do it, it may likely fail... but might be fine. There are some places which have much higher pass-rates than others. If I was hydroing a PST tank, I'd sure ask people who've been around a while what their experience has been with various hydro places and PST tanks.
I asked the guy at everett carbonics whether he sees many tank failures. He told me that the only steel tanks he's ever seen fail a hydro are the occasional old steel72 from the 70s.