Sigma Corporation

SIGMA is the second largest water works pipe fittings supplier in the USA, offering a full line of Cast Iron and Ductile Iron Pipe Fittings in sizes ranging to 54", and including Mechanical Joint Fittings, Flanged Fittings, and Push-On Fittings.

SIGMA has developed a full line of proprietary pipe restraint and pipe/fitting restraint products:

SIGMA also offers MCC (Municipal Castings) and custom casting services. SIGMA maintains four warehouses nationwide, each stocked in depth,to provide customers with prompt deliveries and significant freight savings.