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Duraduct has
pickling and passivation facilities at all of its manufacturing sites
with capability of processing tube and pipe up to 12 metres long, as well
as fittings.
The process involves the immersion of the tubular product into a medium of
15% concentration of nitric acid with a small concentration of
hydrofluoric acid.
This pickling process removes all ferrous contamination to the surface as
a result
of welding in the manufacturing process or general corrosion which has
occurred in the field. It reinstates the chromium oxide layer of the
stainless steel surface and it restores it corrosive resistance
characteristic.
This service facility is available on a contract basis for customers whose
own stainless steel tubular product has been contaminated and requires
refurbish.
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