Welded Duct MIG & TIG

Our standard welded ductwork typically runs from 18ga to 10ga, but we can accommodate for custom pieces as thick as ¼” steel. In some cases, we utilize purge welding to produce clean, small, inside welds as an option. This especially comes up when we offer our 3 different finish levels of welded stainless steel. Level 1 is for the most highly exposed/visible ductwork and therefor the most expensive option with the other two options progressing down from there. Our sales staff can explain the details of these levels and help you choose what you need for your job.

MIG & TIG

We weld the following types of materials:

Stainless Steel
Galvanized Steel/Paint Grip
Black Iron ( Cold Rolled Steel)
Aluminum

We weld rectangle, round and oval ductwork, common items listed below:

Long seam welded pipe with butt joints or angle iron frames
Fume Exhaust Hoods
Dust collection systems including floor sweeps, hoods, and we supply blast gates for such
Curb adapters, Curbs, Curb Caps
Equipment supports, hangers
Custom cad drawn items for HVAC uses

STAINLESS STEEL TIG WELDING

Stainless steel is used in the fabrication of HVAC ducts due its ability to handle moisture and or corrosive chemicals. Depending on the chemicals 304 SS or 316SS will be used. Stainless HVAC ducts can be roll formed like galvanized duct and sealed, but Tig welding stainless duct insures a water-tight duct system. When Stainless HVAC ducts get large, they can no longer be roll formed and must be welded. This process is call TIG welding.

BLACK IRON

Our commercial black iron (CRS) – grease duct is built with 1/2″ flange out joint connections for field welding. Black iron duct and fitting assemblies are welded in our shop to minimize field welding. Access doors can be installed on duct and fittings per your request. Customers should specify, as clearly as possible, which items are to be welded together and the assembly order and orientation (eg. flat on top) if a fully assembled run is desired.

Our products include:

Long seam welded pipe
Industrial fume exhaust hoods
Floor sweeps
Blast gates
Dust collection related fittings

GALVANIZED MIG WELDING

Galvanized steel is welded using Mig welding.

ALUMINUM TIG WELDING

Aluminum is used in the fabrication of HVAC ducts due its ability to handle moisture. Aluminum ducts are used in wet and humid environments, but not corrosive. Stainless HVAC ducts are used in corrosive environments. Aluminum can be roll formed like galvanized duct and sealed, but Tig welding aluminum duct insures a water-tight duct system. When Aluminum HVAC ducts get large they can no longer by roll formed and must be welded. Tig welded is the welding process used to do such.