Ductile Iron Pipe Research Association - Dipra
Ductile Iron Pipe Research Association - DIPRA
  
 
Ductile Iron Pipe Research Association - Member Companies

MEMBER COMPANIES

DIPRA is a non-profit association supported by all of the Ductile Iron pressure pipe manufacturers in North America. While DIPRA member companies have different names and locations, they all have one thing in common: a commitment to produce and deliver the finest quality water and wastewater pipe material in the world, Ductile Iron Pipe.

To get in touch with our member company manufacturers, please click on the icons shown below:


American Cast Iron Pipe Company
 Atlantic States Cast Iron Pipe Company

 Canada Pipe Company, LTD.
 Clow Water Systems Company
Griffin Pipe Products Co.
 McWane Cast Iron Pipe Company
 Pacific States Cast Iron Pipe Company
 United States Pipe and Foundry Company