Our fully welded grease ducts vent flammable grease-laden vapors, usually from commercial cooking equipment, to outside the building. We ensure our duct fabrication is in compliance with NFPA 96 ("Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations"). Check your building and local fire code for special requirements.

Our Grease Duct

Even the smallest hole in a weld can cause issues with your grease duct, in order to mitigate this risk we have an automated transverse butt welder to ensure our quality. Our grease duct is most commonly formed from 16 gauge black iron, but we can fabricate grease duct from most all types of material in various gauges.

Choose from the following options:

Pipe Diameter

  • 4" - 60" 

Metal Type

  • Black Iron

  • Stainless Steel*

Pipe Length

  • Any size from 12" - 120" (standard length is 120")

Metal Gauge

  • 12

  • 14

  • 16

Only select gauges are available with this type of metal.

Welded Grease Duct Installation

A fully welded grease duct system is a large task to undertake. Not only is the pipe heavy and difficult to handle, but it also has little to no margin for error. You must have rigging, welding, and pipefitting skills to get your grease duct installed properly. 


Don't hesitate to ask our installation department for help - we are professionals, this is what we do for a living and we actually enjoy it! 


United Team Mechanical products are manufactured in accordance with the latest SMACNA, ASHRAE and SPIDA standards. In an on-going effort to improve our products, United Team Mechanical reserves the right to revise the design and/or specifications of its products as technology advances or applicable standards change.