Flange Connections

Mill-Pro offers a range of flange assemblies (flange adapter c/w backing flange) and standard PE flange adapters and loose backing flanges with various ring option sizes and materials to suit all applications.

Full Face assemblies – designed so the connecting equipment ID and the PE pipe ID match as closely as possible, with stepping limited to ≤10%.

Standard assemblies – standard size flange adapters and backing rings used for PE pipe to PE pipe flanged joints, may create a step when connecting to equipment DN in sizes ≥ DN250. 

Reducing assemblies – lowest cost option for sizes ≥ DN250, uses a reducer to align the connecting equipment DN and PE pipe ID, creates a large step at the flange face.

Ring materials

EN 1092-1 PN16 Steel FBE (standard), or HDG, or Stainless steel (Grade 316).

EN 1092-2 PN16 Ductile Iron (Grade 400-10). Product in development

Special drillings 

EN 1092 PN10, JIS, ISO, ANSI and other drillings to match pump or equipment flanges can be supplied. 


Steel backing rings are coated with 300um Fusion Bonded Epoxy (FBE) in accordance with WIS 4-52-01 or Hot Dipped Galvanised (HDG). 

Ductile Iron rings are completely encapsulated with high flexural modulus Poly Propylene. Product in development