Screw Conveyor Corporation® is a family owned manufacturing business that has served the bulk material handling industry since 1932. Clarence F. Abraham, one of the original founders, worked tirelessly to create a legacy that is now under the leadership of third generation brothers, Garry M. Abraham and Curtis F. Abraham along with fourth generation, Craig C. Abraham.

The original location of Hammond, Indiana still serves as Corporate Headquarters and along with Winona, Mississippi and Visalia, California makes up the United States facilities of Screw Conveyor Corporation®. Guadalajara Mexico is home to our sister company, Screw Conveyor de Mexico®. The three U.S. locations serve the North American markets while Screw Conveyor de Mexico® serves the markets throughout Central and South America.

Customer service is handled by both the Hammond Indiana and Visalia California locations with all three U.S. locations having manufacturing capabilities. These geographically diverse locations allow Screw Conveyor Corporation® to meet the varied needs of our customers. We engineer and manufacture a complete line of conveyance systems including:

  • Screw conveyor components from 4” to 30” diameter.
  • Super-Flo® round bottom, Super-Flo XL flat bottom, and Enduro-Flo® flat bottom drag conveyors
  • Bucket Elevators: Centrifugal and Continuous Style Industrial Elevators, Belt or Chain

Hammond Indiana Location

Jim Calhoun

Corporate Secretary/VP of Business Development & Marketing


D. Warren Knapp, P.E.

VP of Engineering & Manufacturing


Craig C. Abraham

Business Administrative Director


Anita Kozlowski

VP of Sales


Robert Belko

Director of Corporate Sales


Steve Rauhut

Engineering Services Manager


Steve Boudreau

Engineering & Manufacturing Technology Director


Winona Mississippi Location

Mark Middleton

Director of Corporate Manufacturing


Tim Littlejohn

Senior Manufacturing Engineer


Visalia California Location

Danny White

Operations Manager - Western Operations


Adolfo De La Rosa

Production Manager


Mandy Lipps

Customer Service Manager


Jesse Moran

Western Region Sales Manager


Guadalajara Mexico Location

Alfredo Chavez

General Manager


Gerardo Martinez

Operations Manager


Besides Customer Service, we have a strong network of Master Distributors, Manufacturer Rep Organizations and Sales Engineers so that we are always ready to provide solutions for our customers and the “experience to handle it right”®.