- Reaction score
- wright city, mo
- # of dives
- 500 - 999
The n in the diamond is a Norris tank. The hk1715 should be the serial number. Should be a great tank if the inside is clean.I've uncovered the markings on one of the tanks. They just had their 62nd birthday in June:
6<N inside a diamond>60+
A few final questions:
Is "HK 1715" just a serial number?
Is there really no service lifetime for steel tanks if they're still in good enough physical condition to requalify, or should they be retired regardless?
If I take them to hydro (after cleaning) is there any documentation I should find/attach, like I've read about helping for hot-dip galvanized steel 72's?