Aalco_Datasheet_St_St_Metric_TubeStainless Steel Metric Tube & Fittings Guide
abc® Aalco is a registered trademark of Aalco Metals Ltd
© Copyright: Aalco Metals Ltd, The Hersham Centre, Hersham Green, Hersham, Surrey KT12 4HP
What are Metric Tube & Fittings?
♦ This is a lightweight range o...
Stainless Steel Metric Tube & Fittings Guide
abc® Aalco is a registered trademark of Aalco Metals Ltd
© Copyright: Aalco Metals Ltd, The Hersham Centre, Hersham Green, Hersham, Surrey KT12 4HP
What are Metric Tube & Fittings?
♦ This is a lightweight range of welded tube,
fittings and flanges with thin walls
♦ An I/D based system
♦ This range IS NOT to be confused with the
ISO range of tube sizes which are
sometimes INCORRECTLY called ‘ISO
Metric’ – The ISO sizes are a thin walled,
lower cost alternative to ANSI Pipe and are
not very popular in the UK.
♦ Note that an ‘Isometric’ is a pipe-work plan
used by engineers and defined as follows:
Isometric is a mathematical method of constructing a 3
dimensional object without using perspective. Isometric
was an attempt to make drawing 3-D images easy and
more realistic. The mathematics involved mean that all
lengths when drawn at 30 degrees can be drawn using
their true length (in other
s lines aren't shortened as
with oblique drawings). An isometric drawing shows two
sides of the object and the top or bottom of the object. All
vertical lines are drawn vertically, but all horizontal lines
are drawn at 30 degrees to the horizontal.
Where is this range used?
♦ Water and Waste Water Treatment
♦ Pulp & Paper
♦ Food & Drink (Pre-Process)
♦ Pharmaceutical (Bulk Handling)
♦ Chemicals
♦ Construction
♦ Semi Conductor and other Clean Room
Facilities
What are the advantages?
♦ Lightweight
♦ Demountable & re-usable
♦ Simple to fabricate and erect
♦ Quick and easy to commission
♦ Easy to alter the system, make additions,
etc.
♦ Low footprint, handling weight and
transport cost
♦ Flexibility of fit-up with option of
‘spinning’/backing flanges
What is in the range?
♦ Tube
♦ Elbows, Tees, Reducers, End Caps
♦ Collars & Flanges
♦ Clips & Clamps
What is the size range?
♦ 15mm to 900mm DN
♦ 18mm to 910mm O/D
♦ Wall Thickness 1.5mm to 5.0mm
What do DN & O/D mean?
♦ DN = Nominal Diameter (I/D)
♦ O/D = Outside/External Diameter
♦ I/D = Internal Diameter
What grades are available?
♦ EN 1.4432 (316L High Molybdenum)
♦ EN 1.4307 (304L)
♦ EN 1.4571 (316 Ti = 316 Titanium)
♦ In addition, Backing Flanges may be:
o Aluminium – These may have an epoxy
coating
o Mild Steel – These will have a coating
such as PPA571 Grey Epoxy, Zinc Plating
What is the manufacturing
specification?
♦ Dimensional tolerances are to SS/EN/ISO
1127
♦ Alloys are to BS EN 10088
What is the finish?
♦ Sizes up to about 18mm DN may be bright
annealed
♦ Sizes up to about 70mm DN will be
annealed and pickled
♦ Larger sizes will be pickled but may be
unannealed
What markings will be on the
fittings?
Typically:
♦ Manufacturer’s Name or Symbol
♦ Size
♦ Grade
For more information plus a complete
table of sizes and dimensions please visit
the Down-Loads page of the Aalco web
site and select Metric Tru-Bore Stainless
Steel Tube & Fittings.
(http://www.aalco.co.uk/literature/liter
ature.html#stainless)
This information is based on our present knowledge and is given in
good faith. However, no liability will be accepted by the Company is
respect of any action taken by any third party in reliance thereon
As the products detailed may be used for a wide variety of purposes and
as the Company has no control over their use; the Company specifically
excludes all conditions or warranties expressed or implied by statute or
otherwise as to dimensions, properties and/or fitness for any particular
purpose. Any advice given by the Company to any third party is given
for that party’s assistance only and without liability on the part of the
Company.
Any contract between the Company and a customer will be subject to
the Company’s Conditions of Sale. The extent of the Company’s
liabilities to any customer is clearly set out in those Conditions; a copy
of which is available on request.
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