STANDARD GAUGES FOR OVAL SPIRAL PIPE & FITTINGS

NOTES :
* Angle iron flanges are available for all diameters if desired.
* * ALl oval pipe of sizes not included in dimension chart must be welded longitudinally.
Flat sides of oval duct should be reindorced to limit wall deflection to 3/4" (19 mm) and reflection to 1/4" (6.4 mm)> ref : "SMACNA HVAC duct construction standards"
- All pipes and fittings are fabricated of prime quality G-90 galvanized steel and as per ASTM : A-527-71 and SMACNA standards.