Non-Profit - Golden, CO, US
The Ductile Iron Pipe Research Association provides accurate, reliable engineering information about Ductile Iron Pipe to a wide variety of utility and consulting engineers.From its inception more than 100 years ago, the Ductile Iron Pipe Research Association (DIPRA) has provided accurate, reliable and essential engineering information about cast iron—and now Ductile Iron—pipe to a wide variety of utilities and consulting engineers.
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