Brand Acquisitions

Simpson is comprised of some of the world's largest and most innovative brands of metal casting technologies including Beardsley & Piper, Dietert Automation, Hartley Controls, R. Gerosa SRL, DISA (formerly Georg Fischer) sand testing equipment product lines, and Webac Gesellschaft für Maschinenbau mbH Euskirchen, Germany.


Webac Gesellschaft für Maschinenbau mbH in Euskirchen, Germany together with its subsidiaries Webac Maskin AB in Stockholm, Sweden and Webac s.r.o. in Pribram, Czech Republic acquired by Simpson. Webac was originally a licensee of the Beardsley & Piper Speedmullor®. Since the acquisition, many technologies from Webac have been added to the Simpson product line and vice versa. The Simpson Speedmullor® is manufactured in Euskirchen and in the USA.

Learn more about Simpson Speedmullor®



Georg Fischer (+GF+) / DISA brand sand testing equipment acquired by Simpson from DISA Industries AG of Schaffhausen CH.

Learn more about Simpson Sand Testing Equipment

Georg Fischer


Hartley Controls Corporation acquired by Simpson from Neenah Foundry Company of Neenah, WI USA.

Learn more about the Simpson Hartley Online Control & Automation

Hartley Controls


Gerosa brand sand testing equipment acquired from Ing. Ricardo Gerosa S.R.L. of Rosario, ARG by Simpson.

Learn about the Simpson Sand Testing Equipment



This acquisition brought the Speedmullor to the Simpson product line. Simpson supports the original Beardsley & Piper Speedmullor with engineering solutions and spare parts. The Simpson Speedmullor® has several design updates since the acquisition and continues to be developed into an even more robust and high-quality machine.

Learn more about the Simpson Speedmullor®

Beardsley Piper


Dietert brand automation products acquired from Georg Fischer Foundry Systems, Inc. of Holly, MI USA by Simpson.

Georg Fischer