Duct fabrication in Al Wisami

Yes, when the drawings are clear and carry the actual as-built dimensions. If a dimension is uncertain or a field change has been made, we prefer a site visit to avoid a fabricated piece that does not fit. We discuss the better approach with you before starting work.

G90 galvanized sheet is the standard choice for interior duct: strong and suited to a range of pressures. Aluminium is lighter and handles Jeddah's coastal humidity and salt air better, making it right for some exposed applications or where structural load is a limiting factor. The correct choice depends on the site.

Yes. We measure the existing network on site to match sizes precisely, whether you need a new branch added, a damaged fitting replaced or an extension tied into the original ductwork. The right approach is confirmed after the site visit.

Thickness follows section size: a large duct needs heavier sheet to hold its shape under pressure, a small one can use lighter material. We apply the SMACNA requirements to each section in the project individually, not a single thickness across the whole job.

Yes, particularly for sections exposed to outdoor air or installed near fresh-air intakes. G90 galvanized sheet performs well inside the building, but aluminium is the better choice where duct is in continuous contact with Jeddah's humid, salt-laden air. The site survey determines the right material for each section.

Yes, we take measurements from site or the engineer's drawings and fabricate the duct in the workshop to precise dimensions, avoiding cut-and-fit on site.

We fabricate custom transitions, bends and offsets matched to the building's layout, so the duct arrives fitting the actual run without site cutting.

We use G90 galvanised or aluminium sheet resistant to heat and thermal expansion, both withstanding Jeddah's high heat without cracking.

Yes, Al Wisami is modern with strong electrical and structural systems; we only need the contractor to confirm hanging points and runs.