Sigma Corporation1900 Haeg DriveBloomington, MN 55431Phone: 952-886-0339ย ย Fax: 952-886-0344Mobile: 612-850-9101E-mail: kl1@sigmaco.comContact: Ken LewisServices/Products:MJ & FlangedPipe Fittings, Pipe Restraint Products, Valve Box Products,Municipal Construction Castings.Area served: Minnesota, North Dakota, South Dakota, and Wisconsinย