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  2. List of CAx companies - Wikipedia

    en.wikipedia.org/wiki/List_of_CAx_companies

    Nesting and CNC programming software for sheet metal fabrication SI.CUBE CAD: 5 and 4-6 axis Nesting and CNC programming software for sheet metal fabrication Libellula.HVAC CAD: 3D parametric software for air cooling Libellula.UNFOLD CAD: 3D to 2D flat development Siemens Digital Industries Software (Formerly UGS Corp, Unigraphics Solutions) $1 ...

  3. Sheet Metal and Air Conditioning Contractors' National ...

    en.wikipedia.org/wiki/Sheet_Metal_and_Air...

    The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA; pronounced 'Smack'-'Nah') is an international trade association with more than 4,500 contributing contractor members [1] in 103 chapters [2] throughout the United States, Canada, Australia and Brazil.

  4. Turning vanes (HVAC) - Wikipedia

    en.wikipedia.org/wiki/Turning_vanes_(HVAC)

    Turning vanes inside of large ductwork Turning vane close-up HVAC turning vanes are sheet metal devices inside of mechanical ductwork used to smoothly direct air inside a duct where there is a change in direction, by reducing resistance and turbulence .

  5. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

  6. List of construction trades - Wikipedia

    en.wikipedia.org/wiki/List_of_construction_trades

    Sheet metal worker, also known as a Mechanical Worker, A person who installs Heating Ventilation and Air Conditioning systems (HVAC), duct work, and exhaust systems for kitchens, bathrooms, laundry rooms, furnaces, etc. They also install gas lines and gas piping to a variety of appliances in homes and different types of businesses.

  7. Process duct work - Wikipedia

    en.wikipedia.org/wiki/Process_Duct_Work

    Also metal joints place an additional loads onto duct segments. Metal joints prefer axial movements, and provide significant lateral loads onto duct segments. fabric joints cost $100 to $200 per square foot of joint (2010). Metal joints can cost twice this amount. fabric expansion duct forces are assumed to be 0 #/inch.

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  9. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Warm air systems distribute the heated air through ductwork systems of supply and return air through metal or fiberglass ducts. Many systems use the same ducts to distribute air cooled by an evaporator coil for air conditioning. The air supply is normally filtered through air filters [dubious – discuss] to remove dust and pollen particles. [15]

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