Looks like April 2021.

 

When go fill tank they tell the date.
Most tanks need to be tested every 5 years.
Some new tanks well 10 years.

Dave

FYI the marks after the date [+*] is 10 years test date and over fill by 10%
https://welditmyself.com/gas-cylinder-date-stamp/#12-would-you-like-to-see-an-argon-tank-date-stamp-example

I thought I knew how to read these, but I guess I don't. When was this tank tested?

View attachment 1729944

 

FYI the marks after the date [+*] is 10 years test date and over fill by 10%

That is the part I actually understood.

It is the 18 that had me confused. :jester:

 

+ sign followed by a star sign means test is good for 10 years. Most customer owned cylinders only get the +. I did a fair amount of hydrotesting back in the mid 80's

 

All mine are customer owned and all do have + and the star

 

Doh! IA18 is the stamp of a specific independent tester. Confusion over!

 

i got one the same, but follwed by a '14 instead of '21, and i'm 1500 mi from u, so maybe tester and manufacturer, i think it was it's first stamp.

 

Interesting post, thanks for the replies, Australia is probably different though

Sent from my 5007U using Tapatalk