THE Iron-Clad Truth:
Our reputation is as solid as the pipe we represent.
About us
The Cast Iron Soil Pipe Institute (CISPI) was organized in 1949 by the leading American manufacturers of cast iron soil pipe and fittings. Our goal from Day One has been to improve the plumbing industry and raise the bar on the quality of products available to it.
Today, we are a trusted resource for information on the manufacture, use and distribution of cast iron soil pipe and fittings, as well as a source for expert educational resources.
Through a program of research and the cooperative effort of soil pipe manufacturers, we work to continually improve the industry’s products, achieve standardization of cast iron soil pipe and fittings, and provide a continuous program of product testing, evaluation and development. Since the founding of the Institute, member firms have standardized soil pipe and fittings and have introduced a number of new products.
Assurance that pipe and fittings meet the approved standards and tolerances of the Institute is provided either by the Cast Iron Soil Pipe Institute (CISPI) or the CI NO-HUB® trademarks, which are the collective marks all member companies may place on their products.
Resources
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CISPI Brochure
All too often, the perceived cost advantages of plastic over cast iron are not what they seem. This brochure will help it all make sense, by comparing six areas that can add cost and complexity: fire resistive construction, crush and deflection underground, thermal expansion/
CISPI Cast Iron Soil Pipe & Fittings Handbook
This newly updated handbook features the latest technical specs, installation guides, manufacturing details, layouts and other useful information for putting cast iron soil pipe and fittings to work for you.
CISPI 301
Standard specification for hubless cast iron soil pipe and fittings for sanitary and storm drain, waste and vent piping applications.