More Info on Ductile Iron Pipe Research Association
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.
V-Bio is an evolutionary advancement in pipe protection that adds a new dimension to ductile iron pipe’s long service life. It is a co-extruded polyethylene encasement encased...
