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Welded Duct Flange | Flanged | Welded Flange


Welded Duct Flange | Flanged | Welded Flange
Welded Flanged Duct | Flanged | Welded Flange

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Welded Flanged Duct

Our KB Duct brand offers duct with and without flanges (angle rings) in black iron, galvanized or stainless steel, and with or without holes. We can manufacture flanged duct from 3” all the way up to the size you could drive a truck through, and we can manufacture lighter gauges to full welded product in heavy gauge (even up to 1/4"), all depending upon the application.

With our Welded Flanged Duct, the flanges are welded to the duct, either continuously for a full weld or intermittently, and the faces of the flanges are mated together.



  • Low Total Cost of Ownership
  • High reliability with custom manufactured flanged ducts to fit your application needs starting at 3"



  • Material integrity – Premium quality materials for even the most abrasive applications
  • Flanged duct is available in lengths up to 20' depending on diameter
    • 16-gauge and heavier, seam welded
    • 25" diameter and above are seam welded

  • Standard flanges are galvanized. Available also in stainless steel or black iron
  • Available in heavier gauges and larger sizes.