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In Germany they use steel grit of a typical grain diameter 0.5 mm. This is done because it allows a much better evaluation in the visual inspection. If tanks get rolled with corund gravel, the rust partikels will be smeared over fine crevices of corrosion, covering these from sight. Blasting takes the rust away and makes it clean. Matthias Don Burke schrieb: > > I'd be concerned about them using something hard like sand or diamond grit. > > If they use something soft like bicarbonate of soda or walnut shell, it > shouldn't be an issue, although I'd still want a hydro before I returned the > tank to service. > > Don > > From: <sumpcaver@at*.ne*> > > It seems that there is a shop in my area that likes to > > sand blast the interior of steel SCUBA cylinders, even > > if there is slight surface rust. Any idea how the tank > > manufacturers feel on this? What about the issues of > > work hardening?? > > > > I have sandblasted many different objects with diffent > > media in the past, although one thing I have noticed is > > that blasted objects seemingly look clean and new while > > hiding more oxidation under the surface. > > > > I will not even get into their policy regarding O2 > > cleaning. > > Shop online without a credit card > http://www.rocketcash.com > RocketCash, a NetZero subsidiary > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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