Data Sheets

Stainless Steel   |   General Information

Metric DN/ND Steel Backing Flanges

CommercialBS4504 PN10/PN16

Information on Mild Steel Metric Tube Loose Backing 'Plate' Flanges.
Epoxy Coated 206N (Green)
Drilled according to BS4504 PN10/PN16
What are Metric Tube and Fittings?
~ This is a lightweight range of welded tube, fittings and flanges with thin walls
~ An I/D based system

What is the size range?
~ 15mm to 900mm DN
~ 18mm to 910mm O/D
~ Wall Thickness 1.5mm to 5.0mm

What do DN/ND and O/D mean?
~ DN/ND = Nominal Diameter (I/D)
~ O/D = Outside/External Diameter
~ I/D = Internal Diameter

Backing Flanges may be:
~ Stainless Steel
~ Aluminium – These may have an epoxy coating
~ Mild Steel – These will have a coating such as PPA571 Grey Epoxy, Zinc Plating

For Further Information

Please download or request a hard copy of our Brochure on this product range.


Certifiction and range covered is attached