Stainless steel is available in many varied standards and the
choice of material must be made according to function of the
finished article. These technical issues can get very complex
according to the environment in which the article will be placed,
especially where food hygiene and facilities are concerned. These
technical issues on different grades of stainless steel are not
being dealt with here.
follow this link for information on grades available.
Polishing and finishing of stainless steel is being dealt with
here. The different grades of finishes put on stainless steel by the
mills may well suffice in some cases. These mill finishes can come
in bright, semi-bright, grey, and grained finishes. Some of
these mill grained finishes are very "keen" meaning that the surface
can be very open and susceptible to grease and finger prints as some
people will know from experience with their stainless steel fridges.
Alternative finishes can be applied by the metal polisher to improve
the existing finish for cosmetic reasons, easy cleaning and hygiene.
Hygiene in Hospitals
Over the years of polishing metal items for all sorts of
environments' you can see problems looming to cause trouble, one of
these is the hygiene in hospitals where there is a lot of stainless
steel in all sorts of environments. Men in suits are interviewed and
try to explain away there latest out break of infection while
standing next to a piece of apparatus that is a disaster on wheels.
They don't understand how it gets from one part of the hospital to
another so quickly. Wards are fumigated and closed for weeks if not
months and with in days of reopening are back where they started.
Metal polishing is a very practical discipline its not rocket
science but requires a particular kind of aptitude to get it right.
The comments made above are purely from this approach. If I am 99%
wrong which I know I am not, the 1% left needs a lot of thinking
Rolled over hollow edges, overlapped welded joints with open
ends, tubular legs, box section to mention just a few. These will
fill with water/liquid over time and in the right temperature form
what I call a black sooty deposit like mould between or inside
cavities. If this is disturbed it rises like fine dust and if you
inhale it it will make you feel like you are getting a very bad dose
of the flu with in a couple of hours and it can be very bad. I know
its happened more than I would like to me. If this dust is left in
wet conditions it will grow into a jelly like appearance, the sort
of thing you find in your washing machine outlet hose. Just a sample
of what's is about and there is a lot more!