QF® Duct Pipe has a laser welded seam and Quick-Fit (QF) rolled ends for use with QF clamps, allowing quick assembly / disassembly and relocation.
When needed, QF Duct Pipe is available in heavier gauges: 18, 16, 14 and 12 gauge galvanized steel or 18 and 16 gauge stainless steel.
Nordfab Duct Pipe is also available with flanged ends in diameters as large as 72".