Flanged Branch 18ga

Branches (sometimes called “wyes” or “laterals”) are standard with rotational Angle Flange (AFL) ends, allowing connections with other flanged ductwork. 18 gauge steel material adds extra durability.

When ordering, specify material, gauge, dimensions A, B, C, end styles if not all AFL, and angle (standard 30°, optional 45°).

A - C ≥ C - B. Use formula to determine if a reducer is needed at C.
Length = C X 2 + 9"
Available with QF ends in diameters to 24", and other various end types
Available with 30° or 45° angle
Other gauges available: standard 22 and 20, 16, 14, 12 and 10

Contact Nordfab or your local Nordfab dealer for assistance with ordering 18 gauge Branches.

规格

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Ch. 3, "Round, Oval, and Flexible Duct," based on indicated static-pressure class unless otherwise indicated.
1. Construct ducts of galvanized sheet steel unless otherwise indicated. 304SS Optional.
2. Basis-of-Design Product: Subject to compliance with requirements, provide Nordfab Ducting, LLC; Quick Fit (QF) Duct.
B. Connection Joints: Joint types are fabricated in accordance with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."
1. Quick Fit Joints in Ducts 3 to 24 inches (76 to 510 mm) in diameter. Flange: Optional.
2. Flanged Joints in All Ducts Greater than 24 inches (610 mm) in diameter.
C. Longitudinal Seams: Seam types are fabricated in accordance with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."
1. Fabricated round ducts 3 to 24 inches (76 to 510 mm) in diameter to have laser-welded or plasma-welded longitudinal seams.
2. Fabricated round ducts above 24 inches (610 mm) in diameter to have plasma-welded longitudinal seams.