Custom Fabrication of a Fixed Venturi for a Tunnel application

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Precision Formed Steel Components for a Fixed Venturi System

The city of Boston needed 28 of these fixed venturi's fabricated as part of a ventilation system within a tunnel. The customer supplied detailed drawings which called for compliance with AWS D1.1 welding code. Each venturi was constructed from A-36 carbon steel; the flat plate was cut using our CNC burning capabilities, which allows us to maximize material use. The cut components where then formed and inspected for dimensional accuracy. A mounting rim was fabricated to align all of the components for assembly, which were then FCAW welded, and again inspected to verify the required AWS D1.1 compliance. After fabrication the venturi's had a durable zinc based epoxy/urethane paint applied. Each finished unit measured 6' in diameter, with material thickness of 3/16". For more on this project see the table below or contact us directly.

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Highlights of these Precision Formed Steel Components

Product Description These fixed venturi's are used as part of ventilation within a tunnel.
Custom Fabrication Capabilities Applied/Processes
CNC Burning
  • Cut Flat Plate to Correct Geometries
FCAW Welding
  • Assembled to Mounting Rims
3-Coat Paint System
Overall Part Dimensions Material Thickness: 3/16"
Diameter: Ø6'
Material Used A-36 Carbon Steel
Material Finish Zinc Based Epoxy/Urethane Paint
In process testing/inspection performed Visual
Industry for Use Tunnel Construction
Volume 28
Delivery Location Boston
Standards Met Customer supplied print, 2D CAD Drawing
AWS D1.1
Product Name Fixed venture Inlet

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