crown markings - is there a sticky?

[FM1520]

what do these crown markings tell me? It looks like a HP steel but not sure the size. Also, is there a "sticky" that explains crown markings? I couldn't find it.

TC-SU 4957-230BAR
DOT-SP141 57-3442 TP 5250 REE 94 X7120 4689 34

Thanks!

 

[NAM001]

Well i se thias

tc-su 4957-230bar
transportation canada ??????? 230 bar working presure

dot-sp141 57-3442 tp 5250 ree 94 x7120 4689 34

department of transportation special permit 14157 test presure 5240 (for hydro) ???????

 

[azjohnnyo]

Working PSI is 3442 so you are correct...it is a HP steel. Not sure of the size though?


JohnnyO
------------
"What if the Hokey Pokey IS what it's all about?"

 

[Blue Sparkle]

I saved these when I found them in an older SB thread:

 

[Brandon]

TC-SU4957 230BAR = Transport Canada approval, 230 BAR Service Pressure
DOT-SP14157 3442 = DOT Exemption, 3442 PSI Service Pressure

TP 5250 = Testing Pressure
REE 94 = Elastic Expansion stamped on tank to make Hydro tech's life easier

X7120 = Cylinder Type (This is a Worthington X7-120, which is a 7.25" high pressure 120CF cylinder)
468934 = Serial Number

Should have been a hydro date on there as well in format mm/yy, and the manufacturer's ID number, which for Worthington should be M8004.

-B

 

[knotical]

... is there a "sticky" that explains crown markings?

Not that I'm aware of, but some useful sites (in no particular order):

http://scubatanks.us/index1.html and click on “Scuba tank markings”

http://catalinacylinders.com/markscuba.html

http://www.underwaterdivingequipment.com/tank-markings.html

http://www.luxfercylinders.com/support/serial-numbers/55-typical-markings-for-a-scuba-cylinder-according-to-ped

and pages 55-58 of this document:
www.luxfercylinders.com/9/download/download