All You Need to Know About flanging

A technical definition of flanging

Flanging is bending the metal of a surface, whether it is a blank, sheet metal, funnel, or a cylindrical shape, to a 90 degree angle. This is done by metal spinning or deep drawing a flange into the application, or by utilizing a flanging machine.  The Flanging process is typically combined with our rolling and welding processes. 

Pictured below are two of our flanging machines adding a flange to two different sizes of custom cylinders.


Stainless Steel Cylinder with cutouts and flange
Large rolled and welded cylinder being flanged

At Toledo Metal Spinning, we have various processes and technologies within our Blue Valley Flangers. We are equipped to add a single or double flange, or bead to our rolled and welded cylinders, and can take on large or small parts, depending on your needs.

What are flanges for?

Flanges are used for connecting extensions together, or hold lids onto the part. Flanges also increase the strength and durability of the part once they are added.

How does a flange connection work?

During the design process, all material must be accounted for to manufacture the correct size flange. Depending on what the final product is, we may spin, press, or use a flanging machine. The Blue Valley Flanger is our most common flanging machine

A flange connection is an assembly involving two components, either pipes or pipe fittings, two flanges, flange mats, and bolts or clamps. Different types of washers are used to ensure a strong connection.

The Flanging process includes bending the edge of a piece of metal, whether that is a blank, a flat sheet, a cylinder, or the end of a different shape. We can add flanges to various shapes, with our most popular flanging occurring on our stainless steel cylinders. This process reinforces the bent edge, increasing the durability of the part, while providing a connection for multiple components to attach to. These connections can take place with a clamp, or we can design the part for the components to be bolted together.


A common use for flanges is the The flange is manufactured on the extension or the cover, and a gasket is placed in between the clamped pieces.

Typical Applications for Cylinders and Flanges:

  • Metal Dryers
  • Pneumatic Conveying Systems
  • Metal Housings
  • Fan inlets
  • Fan housings
  • Internal components for blowers
  • Vacuum Assemblies
  • Pipes

Still interested? Check out our video below to learn even more! 

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