Sheet metal flanges can be manufactured by stamping, roll forming and by axial-load bulge forming. Bulge forming offers minimal material thinning and a uniformly flat sealing surface.

Typical Configurations

Voss sheet metal flanges are designed and fabricated for easy attachment to duct ends by welding. They may be supplied oversized for slip-on and seam welding, or tube-sized for butt welding. Since sheet metal flanges do not have a pilot surface, alignment during installation is critical for optimum performance.

Bulge-formed flanges are normally available in diameters from 1 inch through 10 inches.

Roll-formed flanges are more economical and available for all diameters over 8 inches, and have a single weld.

Production versatility and manufacturing skills enable Voss to supply sheet metal flanges in a variety of materials to meet all ducting joint operating conditions.