General Engineering Specifications for Nordfab Quick-Fit

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DUCTWORK:

All ductwork shall be of a clamp- together design using a die-formed, rolled edge, which is then joined together by a single lever clamp of similar material. All clamp together ducting shall be of continuous laser welded construction along the longitudinal seam of the rolled form duct. All connections shall have a nitrile seal in clamp for standard installs and a Gortex seal for mist or food grade applications.

Duct material sheet blanks are five feet long, which is then rolled and fused together with a laser weld process along the longitudinal seam.

The ends of the duct are then pressed in a die to form a rolled bead on each end of the duct. This rolled end is used for clamping components together as well as reinforcement every 5 feet.

COMPONENT MATERIAL:

Straight duct and other connecting components to be constructed of galvanized sheets produced by the continuous galvanizing process which conforms to ASTM-A-527, and commercial quality ASTM A-527. Galvanized sheeting is produced with a minimum spangle with coating weight of G-90.

Ducting constructed of stainless steel to be 304 2B finish (2B finish is annealed, pickled and bright cold rolled)

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