Colonial Engineering, Inc. is a full-service custom injection-molder with operations in Portage and Benton Harbor, MI. Colonial also manufactures plastic valves for the industrial PVF, process piping, water-treatment, pool, plumbing and irrigation markets.

Certified to ISO 9001:2008

Colonial Engineering, Inc.
6400 Corporate Ave
Portage, MI 49002



Customer Service (toll-free):

National order fax (toll-free):
866-879-5982 or 269-323-0630