Our Sigma Corporation Products Include
- Fire Protection » Ductile Iron
SIGMA Corporation has been manufacturing products for the North American Waterworks industry for over 20 years. We are proud to offer the highest quality ductile iron waterworks fittings, pipe restraint products, and municipal construction casting products available on the market today. SIGMA has warehouse locations across the nation and in Canada to provide the highest level of reliable service and give our customers, and their customers alike, the confidence in product well engineered product with consistent quality, delivered on time, with industry competitive pricing.
SIGMA is a New Jersey, USA Corporation, in business since 1985. SIGMA’s core products have been Waterworks pipe fittings and accessories, in CI and DI, as per the AWWA/ANSI standards C110/A21.10 and C153/A21.53. We pioneered production of these pipe fittings in China starting in 1985 and since then we have steadily grown to be the second largest AWWA pipe fittings supplier in USA!
Today SIGMA offers the widest range of pipe fittings in the industry and can satisfy every requirement on a job.. Our quality is ensured through proprietary quality systems that exceed the requirements of AWWA and other national standards. These are monitored by on-site SIGMA engineers who ensure all aspects of supply chain reliability. Our products also undergo third party inspection by UL and FM (Factory Mutual) on a regular basis.