Does anyone know the significance of the letter stamped on the flat of early SA gas cylinders? Thanks.
https://www.milsurps.com/images/impo...and038he-1.jpg
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Does anyone know the significance of the letter stamped on the flat of early SA gas cylinders? Thanks.
https://www.milsurps.com/images/impo...and038he-1.jpg
The consensus is that it is some sort of inspector's marking OR denotes the type of coating used on the low grade stainless steel.JR
These two articles explain it.
https://www.milsurps.com/images/impo...finish02-1.jpg
https://www.milsurps.com/images/impo...refinish-1.jpg