Ductile-iron pipe | Article about ductile-iron pipe by The Free Dictionary
A pipe that is fabricated of a cast-iron alloy in which graphite replaces the carbon that is present in cast-iron; provides the same advantages as cast-iron pipe along with the added advantage of a higher external load-bearing capacity; not as brittle as cast-iron pipe (thus permitting rougher handling) but higher in cost.
References in periodicals archive
Written for designers, managers and operators of water distribution systems, this manual contains all the technical specifications and applications information regarding ductile-iron pipes
A second reason ductile iron tends not to hold up as well under comparable biocorrosion attack, King says, is that because of their superior strength, ductile-iron pipes
tend to be made thinner.