QF Pipe

QF pipe is laser-welded ducting and has rolled ends for quick assembly. It requires no tools, as you only need to use clamps to connect the pipes and fittings together. When used with an adjustable nipple, straight pipe runs can be generally estimated and cut-to-fit upon installation. Pipe lengths are approximately 5 feet and have diameters from 3 inches to 24 inches.
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Quick-Fit (QF) pipe is manufactured in order to facilitate construction of a ducting system simply by clamping parts together quickly, without welds, bolts, screws, flanges, special tools, precise measurements, or special skills. QF pipes have laser-welded seams that eliminate any area on the inside of the pipe that might retain material or harbor dust. The QF Pipe piece is made with rolled ends for use with QF clamps, which allows for quick assembly and disassembly. Consequently, installation time is generally reduced by more than 40 percent over the assembly of traditional ductwork systems.

QF Pipes are manufactured as follows:

  • With Galvanized or Stainless steel metal (optionally with Powder Coated carbon steel), in 20 gauge to 22 gauge metal thickness (optionally with 18 gauge or 16 gauge metal)
  • Rolled QF End diameters from 3 inches to 24 inches (Flanged-end in diameters greater than 24 inches)
  • Approximate lengths of 5 foot long. When used with QF Adjustable Nipples, any straight length pipe run can be estimated and adjusted precisely to length during field installation

Rolled QF End pipes in the XD product line can be manufactured with 14 gauge galvanized metal in diameters up to 24 inches (Flanged-end pipes in diameters greater than 24 inches).

  • Construction: Longitudinal seam is laser welded.
  • Standard QF ends can be changed to Raw with a defined ID dimension (RawID), Raw with a defined OD dimension (RawOD), No Fitting or just a raw end (NoFit), Flexible hose adapter (RawFlex), Flat Flange (FFL), Angle Flange (ANGFL), or Van Stone (VanStone).
Size
in.
Galvanized
ga.
304SS
ga.
Weight
lbs.
Length (L)
in.
OD
in.
ID
in.
Rolled Edge
nom. in.
3 22 22 4.00 59.25 3.07 3.00 0.2
4 22 [18] 22 [20] 5.35 59.25 3.93 3.86 0.2
5 22 [18] 22 [20] 6.65 59.25 4.94 4.87 0.2
6 22 [18] 22 [20] 7.93 59.25 5.96 5.89 0.2
7 22 [18] 22 [20] 11.70 59.06 6.96 6.89 0.2
8 22 [18, 16] 22 [20] 13.25 59.06 7.95 7.88 0.3
9 22 [18, 16] 22 [20] 14.92 59.06 8.95 8.88 0.3
10 22 [18, 16] 22 [20] 16.60 58.75 9.95 9.89 0.3
11 22 [18, 16] 22 [20] 18.10 58.75 10.94 10.88 0.3
12 22 [18, 16] 22 [20] 19.75 58.75 12.04 11.87 0.4
13 20 [18, 16] 20 21.40 58.75 13.05 12.97 0.4
14 20 [18, 16] 20 27.30 58.75 14.04 13.96 0.4
15 20 [18, 16] 20 29.25 58.75 15.04 14.97 0.4
16 20 [18, 16] 20 31.15 58.75 16.04 15.97 0.4
17 20 [18, 16] 20 33.09 58.75 17.05 16.97 0.4
18 20 [18, 16] 20 34.00 58.75 18.04 17.96 0.4
19 20 [18, 16] 20 36.00 58.75 19.04 18.96 0.4
20 20 [18, 16] 20 38.00 58.75 20.04 19.96 0.4
21 20 [18, 16] 20 40.00 58.75 21.04 20.96 0.4
22 20 [18, 16] 20 42.00 58.75 22.05 21.97 0.4
23 20 [18, 16] 20 44.00 58.75 23.04 22.96 0.4
24 20 [18, 16] 20 45.82 58.75 24.02 23.94 0.4
Galvanized Gauge Metal Thickness
Gauge Inches Millimeters
22 0.0366 0.85
20 0.0396 1.01
18 0.0516 1.31
16 0.0635 1.61
Stainless Gauge Metal Thickness
Gauge Inches Millimeters
22 0.031 0.79
20 0.0375 0.95
NOTES:
  1. At temperatures ranging between 390° F and 480° F, the zinc-iron alloy layers in the galvanized steel will continue to provide a high level of protection from corrosion. However, there may be some peeling, changes in mechanical properties, and reduction in the corrosion protection. Recommended maximum service temperature is 390° F.
  2. For 304 SS metal, bluing may occur at temperatures of 800° F and above.
  3. Rock River Silicone Sealant and Red Devil HVAC/R High Temperature Silicone Sealant are not able to be painted.
Item Material Compliance/Rating
QF Pipe Galvanized ASTM A653 with a G-90 Rating
304 SS Finish meets ASTM A240
316 SS Finish meets ASTM A240
3M Scotch Seal Metal Sealant
2084
Polyurethane ASTM E162
ASTM E662
Bombardier SP 800-C
Rock River Silicone Sealant 100% Silicone ASTM C920 Class 25
TT-S-00230C Class A and TT-S-001543A
FDA No. 421 CFR 117.2600, conforms to FDA requirements
Red Devil HVAC/R High Temperature Silicone Sealant Silicone ASTM C920 Class 25
TT-S-00230C Class A and TT-S-001543A
CEBTP 432.6 140-2
Mil Spec 46106A
CGSB 19C9-9B
DIN 18540 Part 2
Orex 150031-2
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