Double Wall Spiral Ductwork

These two components help ensure a more consistent airflow temperature during delivery.

Double wall spiral ductwork.

Double wall round spiral duct and fittings are one part of our complete line of hvac products. Smc double wall round spiral duct is a dependable erosion resistant alternative to lined round spiral duct providing improved protection for insulation exposed to the airstream. Here are some of the product options for round insulated duct that are available from spiral pipe of texas. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork.

Spiral pipe gauge we manufacture spiral pipe in 18 20 22 24 gauge galvanized metal. Dual wall insulated spiral pipe consists of two concentric spiral pipes with insulation filling the space between the pipes. Double wall flat oval duct is available in spiral lockseam and longitudinal seam con structions. No painting required will last years outdoors.

It is shipped from the factory with the insulation pre installed reducing job site labor costs. Double wall ductwork and fittings duct is of spiral lock seam construction with a mechanically formed seam locking indentation evenly spaced along the spiral seam. Duct direct 8610 wallisville rd. Double wall construction allows you to contain the insulation media between an inner and outer metal shell.

Our standard double wall duct and fittings have galvanized sheet metal outer walls and a layer of fiberglass insulation surrounding the inner liner. Double wall pipe and fittings with e z flange and barrel clamp or standard slip connection sheet metal connectors inc. Which is the best material for making double wall spiral duct. 713 672 0509 toll free 877 774 duct 3828.

Next there s the second inner spiral duct. Inner and outer duct will be of spiral lockseam construction. Duct insulation is also critical in reducing hvac system noise. Houston texas 77029 phone.

Spiral pipe diameter available in 3 inch to 36 inch diameter. All spiral duct 8 diameter and larger shall incorporate multiple corrugations between spiral seams. First there is the larger duct that s visible to everyone. Stronger than other pipe our pipe is up to 20 stronger than smooth pipe systems of the same gauge due to the added spiral reinforcement.

Doublewall spiral pipe catalog specs. Dual wall also called double wall insulated spiral pipe. In double wall round spiral duct a metal inner liner insures that high airflow velocities cannot separate insulation by pulling away from the duct s outer wall and creating erosion or airflow problems.