We offer duct systems in Galvanized; 304 & 316 Stainless Steel; Aluminum; PVC coated and carbon steel. We can provide duct systems from 4 inches in diameter to 100 inches in diameter. Allied Technologies provides more Spiral duct than any other Representative in the State of Kentucky each year.
Manufactured spiral ductwork
Allied Technologies is the largest supplier of Factory Fabricated Spiral Duct Systems in the State of Kentucky. Through Eastern Sheet Metal we provide 1,000,000 pounds a year of single and dual wall Spiral duct. We provide low pressure systems of one inch static pressure up to ten inch high pressure systems.
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Grease Ducts
Beginning January 1; 2009 ASTM re-evaluated the methods for testing ductwrap on welded duct work. ASTM E 2336 no requires two layers of duct wrap on field welded/fabricated duct.

Allied Technologies represents Metal Fab; which manufacturers G-Value UL listed grease duct which requires no Wrap and has a Zero Clearance to combustible rating.

This Duct is approved by the State of Kentucky per IMC 2006, Allied Technologies can assist in State Approvals of these systems.

Allied recently completed the new KFC Yum Center which included 16 separate systems ten to 22 inch diameter 20 to 150 feet in length.

Other notable Locations utilizing Metal Fab G Series Grease duct include Churchill Downs; University of Louisville and Papa Johns Stadium.

For a video detailing the advantages of this visit please visit the
Metal Fab Site.
Reference Media
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UofL Arena Schematic

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SW Fittings

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JCC Schemtaic

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DW Fittings

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Grease Duct Systems

Grease Duct System at Yum Center

Sample Schematic

Sample Schematic