CUBE Spiral

CUBE duct factory; we take a leading role fabricating entire exposed spiral ducts and fittings. Spiral duct offers many advantages as it needs no lead time on materials. Installed cost up to 50% less than traditional rectangular duct work. Spiral round ductworks built of galvanized steel sheet, G90 zinc coating, lock forming quality, conform to ASTM A 653 and A924 in accordance with table 3-2 and 3-3 , SMACNA HVAC Duct Construction standard-2nd edition 1995


G.I steel sheet, thickness range from 0.5 to mm 2mm
Stainless Steel Sheet grade 304 and 316 thickness range from 0.5 to 1.0mm.
Aluminum sheet , thickness range from 0.5 to 1.0mm.


Ø80 to Ø2500 in standard length of 3000 mm and up to 6000 mm optional length.

Spiral Round duct is easy to install. All pipe ends are female and all fittings are male, allowing pipe and fittings easily slip together. There are several methods of joining spiral round ducts and fittings depending on your application and your requirements. Slip joints are the simplest method of joining

spiral ducts and fittings. Fittings to fittings joints (male to male) require a separate coupling, RCF, or a

short piece of spiral duct can be used in the field.Pipe to pipe joints (female to female) require a

separate coupling, RCM. Spiral duct to fitting slip together without a separate coupling. Slip joints are fastened with screws or pop-rivets and duct sealant applied if additional air tightness required.