Established in 1920, Electrical Engineering Company known as 3E, is an industry leader with diverse capabilities. We are a group of related businesses working together to enhance service to the electrical industry.

Business Support Solutions
Electrical Supplies & Services
Power Distribution & Energy Management
Commercial Lighting & Control
Industrial Supplies
ITS / Information Technology Systems
Electrical Apparatus Repair
Control Panels / Value Add Service
Custom Steel Fabrication & Equipment




Our Swift-Flow and Master-Flow conveyors are built entirely at our manufacturing facility in Des Moines, Iowa. We specialize in custom fabrication. Our conveyors can be designed to meet any application and/or specification required. Our team of mechanical and electrical engineers are available to work with you through the design process..


Swift-Flow Conveyors

Swift-Flow Conveyors

  • Engineered and fabricated at the 3E Custom Steel Fabrication Facility in Des Moines, Iowa since 1956.
  • Dust-tight and vapor-tight applications.
  • Horizontal, L-Path, Loop, Split-Leg, S-Path. Custom to your application.
  • Full-flight Design
  • Industries highest quality and most durable conveyors available.
    • Low Maintenance
    • Proven to last over 40 years!
  • Used for the movement of:
    • Beans
    • Cotton
    • Canola
    • Corn
    • Sunflowers
    • Peanuts
    • Chemicals
    • And much more…
  • Mild steel or stainless steel construction.
  • Abrasalloy wear resistant dividers and liners.
    • Standard for dividers and drop bottoms
    • Ability to use in many conveyor applications and industries
    • Proven to outlast AR400 in many applica-tions
    • Last longer = more cost effective
    • Scientifically heat treated
    • Medium carbon nickel-chromium-molybdenumalloy steel
    • Furnished quenched and tempered to following approximate physical properties:

    ⇒Tensile Strength: 200,000 PSI

    ⇒Tensile Strength: 200,000 PSI

    ⇒Yield Strength: 180,000 PSI

    ⇒Fatigue Strength: 85,000 PSI

    ⇒Elongation in 2”: 16%

    ⇒Reduction of Area: 45%

    ⇒Modulus of Elastically: 30,000,000 PSI

    ⇒Brinell Hardness: 400

    • The addition of Nickel increases toughness and helps to resist corrosion
    • Abrasalloy combines hardness and tough-ness with the ability to wear harden and form a smooth abrasion-resisting surface

Swift-Flow Chart


Master Flow Conveyors

Master-Flow Conveyors

  • En-Masse conveyors for horizontal and slight incline applications.
  • Heavy-duty, maintenance friendly bolt together design
  • Sandwiched Abrasalloy return rails
  • Dust-tight and vapor-tight applications
  • Stainless steel, mild steel, or galvanized construction
  • Low-flight design
  • Shop assembled, dowel pinned, and match marked before shipment for easy field assembly
  • Studded Abrasalloy wear liners available
  • Oil tight chain guards, motors, and drive preassembled for easy field assembly


Screw & Plug Conveyors

  • Large availability of custom and standard screw conveyors for many different industries
  • Different kinds of flighting for numerous applications
  • Stainless steel, mild steel, polished steel constructions
  • Plug Screw Conveyors engineered to your needs

Belt Conveyors

  • Many different industries served
  • Heavy-duty low maintenance conveyors for grain and ag-gregate industry
  • Light-duty, cost effective conveyors for package handling, and small materials...
  • Engineered custom to customers design

Bucket Elevators

  • Heavy-duty stainless steel, carbon steel, or galvanized construction
  • Grain, aggregate, chemical industries all served
  • Safety platforms and structural steel available with bucket elevator

Statistics Reinforce Your Solutions & Provide Credibility

Our employee-owners are empowered to give it everything we've got to bolster your bottom line.

Ideas Generate Innovation

Custom wire and cable solutions, online ordering, drive-through service and more.

Orders are promises

Same-day delivery, 800+ brands, and best-in-class fulfillment.

Expertise is essential

On-call technical troubleshooting and six dedicated teams of product specialists.

Gratitude gives back

Volunteering and providing financial support to our communities.

Latest News

Learn about our recent projects, best practices, newest products, latest news and more.

Don't Take Our Word For It

Testimonials are a powerful selling tool. Ask some of your better known affiliations to share a few words about how you've made their lives easier.

"What A Wonderful Team To Rely On"

Ned Plimpton, Belafonte Co.

I'm continually blown away by the team at Symphony. They rock! I would come back again and again.

"Produced With Perfection In Mind"

Walter Sobchak, Rug Collector LLC

I don't know what I would do without Symphony. My happiness has gone through the roof :)

"This Product Blew Me Away"

Lucille Bluth, Real Estate Inc. Group

My expectations were exceeded beyond belief.  The product was wonderful and it asnwered all my problems!