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Perhaps someone could clear up a rumor/myth I've heard. Is it true that the
inside of a steel tank can be swabbed or coated with oxygen compatible
grease to prevent rust?
Thanks,
Don

----- Original Message -----
From: "Matthias Voss" <mat.voss@t-*.de*>
To: "Jim Cobb" <cobber@ci*.co*>
Cc: "Mantis Diving" <dive@ma*.co*.au*>; "Techdiver@Aquanaut.Com"
<techdiver@aquanaut.com>
Sent: Saturday, June 02, 2001 9:46 AM
Subject: Re: Steel cylinder internal rust


> Depends on the nature of the rust. Has it been on the surface only, or
> bitten deeply into the structure ?
> The nature of corrosion depends a bit on the steel alloy and process of
> manufacturing.
>
> A clean surface after the acid cleaning should not have weakened
> crossections.
> This can be inspected optically, in doubt by ultrasonic. May be more
> costly than a new bottle.
> Matthias

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