GI Ductwork / Galvanized Iron Ductwork is generally implemented in either Exposed Areas or Hot Kitchen Applications. There are two types of joining methods for GI Ductwork which are Ductmate and S and C type joints. Usually, for small ducts, S and C joints are considered whereas Ductmate is preffered where the sizes are usually above the recommended value.
We have done plenty of projects with full HVAC scope, with the GI Ductwork mostly in the shaft of roof areas (Exposed) for Fresh Air and Exhaust Air applications with Various Gauges ranging from 24 AWG to 18 AWG. The gauges are usually selected as per the size and application of Ducts.
For Conditioned Areas / Ducts, we would apply Insulation over the ducts as per requirement / standard and these insulations are briefly categorized into:
- Rockwool Insulation
- Fibre Glass Insulation
- Rubber Foam Insulation
- Polyolefin Insulation (Apco Flex)