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Method of Installation


Spiral Round Duct

WAD Spiral Duct is fabricated from steel strips helicoidically wound and seamed with a four ply lockseam, which gives the pipe added rigidity. The seam is outside the pipe wall leaving the inside free of obstruction for an optimized air flow. Spiral duct is used in a variety of commercial and industrial applications for ventilation and dust or fume collection. They can be made of galvanized steel,Stainless Steel, or aluminum. They are available in standard lengths of 2/3/4 meters or any other length on demand.

Specification

Couplings / Flanges conform to all specifications of the SMACNA 2005 3rd edition manual, WAD's spiral Ducts will meet or exceed the gauges listed in the SMACNA 2005, 3rd edition manual.

Sizes

Dia 100 MM - Dia 1400 MM in 50 MM Incremental.

Construction of Material

   Diameter  Material Thickness Standard Length
100 MM - 1400 MM GI 0.5 MM to 1.0 MM 2/3/4 Meters
400 MM - 1400 MM GI 1.2 MM 2/3/4 Meters
100 MM - 1400 MM AL 0.8 MM to 1.2 MM 2/3/4 Meters
150 MM - 1400 MM SS 0.6 MM to 0.8 MM 2/3/4 Meters

Advantages of Spiral Round Duct

  • Exposed Spiral duct is attractive and is frequently specified by architects because of its superior aesthetic appeal. Paintable Spiral duct can be finished to blend in with, or stand out from, the indoor environment.
  • Easier to install through and around structural framing.
  • Longer spans reduces installation operations and the number of connections and hangers required.
  • Low air leakage, optimal airflow characteristics, and less pressure drop allow smaller and more efficient air moving equipment.

Fittings

TWIN SEGMENT BEND
BREECHES PIECE (MITRED)
THREE WAY
TROUSER PIECE
SEGMENT BEND + TAP ON SEG
TWIN BREECHES
REDUCER WITH MULTI BRANCHS
REDUCER (EQUAL)
REDUCER (OFFSET )
REDUCING SHOE TEE CROSS
MITRED BRANCH OFFSET
MITRED BRANCH OFFSET
MITRED OFFSET
REDUCING MITRED OFFSET
DOUBLE SADDLE SHOE FLAT FRONT
EQUAL LENGTH CROSS REDUCER
TEE WITH SQUARE COLLAR
SQUARE TO ROUND (OFFSET)
SQUARE TO ROUND (SYMMETRICAL)
SHOE TEE - CROSS
CHIMNEY
DEFLECTOR HOOD
REDUCER + 4 BRANCHES
REDUCER + MITRED BRANCH

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