What is ductile iron pipe used for?

Ductile iron pipe is pipe made of ductile cast iron commonly used for potable water transmission and distribution. This type of pipe is a direct development of earlier cast iron pipe, which it has superseded.

Is ductile iron pipe good?

Ductile iron pipes are natural, safe, and sustainable…. Ductile iron pipe is made to last 100+ years, and is environmentally preferable over synthetic pipe materials, both in its recycled content and its own recyclability. This strong, safe and reliable product has the longevity to last 100+ years.

What is the difference between cast iron pipe and ductile iron pipe?

Ductile iron can be bent without breaking, whereas cast iron is brittle and breaks when bent. As ductile iron can be bent, it can be made into different shapes and forms. But one cannot make out different shapes and forms using cast iron. While ductile iron is flexible, cast iron is not.

How strong is ductile iron pipe?

Ductile Iron pipe Defines Durability Specifically, this pipe has minimum strength requirements of 10 percent elongation, 42,000 psi yield strength and 60,000 psi tensile strength.

How long does ductile iron last?

This kind of pipe has been used for water or sewer conveyance since the 1950’s, and based on studies of this pipe from the 50’s, it is believed that ductile iron pipe will last at least 100 years which is at least as good as cast iron, but with more reliability.

Can ductile iron pipe crack?

The cracking of cement-mortar linings in Ductile iron pipe occurs due to the shrinkage of the linings and temperature variations. These cracks are generally two types. Both types of cracking are permitted and addressed within the ANSI/AWWA C104/A21.

Why is ductile iron so expensive?

Ductile iron just needs some extra nodular agent materials than grey iron, so its production costs are only some higher than cheapest grey iron, but far lower than malleable iron and austenitic iron. This is also the main reason why ductile iron is replacing malleable iron.

Can ductile iron be welded?

Ductile iron is more susceptible to welding stresses, and more likely to crack while welding or during cooling. Therefore, highly stressed ductile iron castings or portions thereof should never be welded. It is recommended not to perform welds if their section is more than 20% of the metal thickness.