Ductile iron has high strength and is corrosion resistant. A high level of popularity and usage goes on due to the positive characteristics ductile iron carries. Ductile iron pipes are proven and tested solutions for many applications such as domestic, water and wastewater, sewage and many other applications. Many other options are there to select from but the features of ductile iron make it ideal for loads of applications. DI pipes and fittings  are a direct development of cast iron. Ductile iron pipes can resist damage at the time of handling and shipping. Once installed, these iron pipes can withstand demanding operating conditions that include frozen ground, heavy traffic etc. Read this blog to know more about DI pipes and fittings.

Why is ductile iron material the most chosen?

Ductile iron is also known as the “nodular iron”. It is an iron group that has high flexibility, strength, elasticity and durability because of its excellent microstructure. Ductile iron consists of 3% of carbon and can be deformed or bent with ease without any fracturing. The mechanical properties of ductile iron are quite the same as steel but exceed standard cast iron. In regards to the practical uses, the ductile iron pipes and fittings are used in the water and sewer lines as they are stronger than cast iron. It has been found that magnesium alloy addition to the molten iron changes the microstructure of ductile iron and enhances its mechanical properties.

Carbon and graphite in cast iron are there as flakes. Cast iron showcases the positive compressive load capacities but the tensile loading more than its tensile strength leads to cracks. Cast iron has no elongation and limits its usage in shock-loading applications. If we talk about ductile iron, graphite present in the ductile iron occurs as spheroids. The carbon in the ductile iron is held in nodule form and this microstructure causes the ductile iron to withstand shock loading and bending applications as compared to the conventional cast iron. All these reasons help people to choose DI material over any other material for pipes and fittings for their pipelines.

Ductile iron is an ideal material for Water and Sewage:

Yes, ductile iron is an ideal material for water & sewage applications. You can find ductile iron pipes and fittings in a varied range of diameters from 80 mm – 1600 mm. They are highly suitable for sewage, potable water transmission and distribution. DI pipes and fittings  are very simple to join and can be used in every weather condition and sometimes without the requirement for backfill. The high safety factor and easy accommodation to ground movement make ductile iron the perfect material for pipelines for a broad range of applications.

Ductile iron has very minimum strength needs of 42,000 psi yield strength, and 60,000 psi tensile strength with around 10 % of minimum elongation. All these super characteristics make ductile iron an ideal material for water and sewage applications as compared to concrete and other materials.

Why do ductile iron pipes and fittings prove advantageous to users?

There are numerous advantages of ductile iron pipes and fittings. Explore a few of the benefits:

a) Offers both reliability and safety

The pipeline materials like polyvinyl chloride may experience failures because of high pressure and ground movement. If we talk about potable water pipelines, the failures can highly contaminate drinking water. The cracks or ruptured wastewater pipes can even contaminate the surrounding areas. The pipe and fittings made of ductile iron are famous for their excellent tensile strength, impact resistance as well as bending strength. The strength combined with the standard wall thickness permits ductile iron pipelines to withstand ground movement because of settlement, heaving and seismic activity. Ductile iron pipes and fittings have excellent bursting strength and help them to withstand high-pressure surges like water hammers.

b) Great machinability

DI pipes and fittings can be easily cut or bent without having the effect of chip-breaking. Both graphite and silicon content in the ductile iron provides lubrication and flex at the time of manufacturing. Ductile iron pipes and fittings as compared to steel pipes have numerous benefits during machining that includes high productivity, longer tool life, quick spindle speed and lesser cost of operation.

c) Eco-friendly

Ductile iron pipes and fittings are recycled and are completely environmentally friendly. They can be made from recycled steel scraps and many other sources. The pipes are recyclable too and release zero net waste. This recyclability of ductile iron reduces much environmental contamination along with carbon emissions. The environmental benefits guarantee proper waste management. So the feature of sustainability makes them ideal for pipelines and fittings.

The durability, strength & adaptability of ductile iron make them a reliable selection for water & wastewater pipelines. DI pipes and fittings offer users several engineering benefits. Ductile iron is safer and environmentally friendly. Reach out to a leading supplier of ductile iron pipes and fittings.


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