Ductile Iron Pipes
What is Ductile Iron?
Ductile iron is an iron/carbon/silicon alloy with a nodular graphite structure that produces a strong, ductile
material. With more than double the tensile strength and much higher ductility than that of cast iron, ductile
iron pipes are simple to joint, can be laid in all weather conditions and often without the need for selected
backfill. Its high safety factor and ability to accommodate ground movement make it the ideal pipeline
material for a wide range of applications.
So Why Choose Ductile Iron Pipes?:
LONG LASTING
These pipes can provide well over 100 years of high-quality performance.
STRENGTH
These pipes are suitable for above ground and below ground applications.
EASE OF INSTALLATION
Simple push on type jointing system. Even unskilled workers can lay pipes with minimum equipment and training
FLEXIBLE
Ductile Iron has a flexible joint with generous deflection allowances
SPEED
Large amount of stock held in the UK of pipe, fittings and ancillaries. Does not require expensive skilled subcontractors or systems to weld and verify joints.
Pipe Manufacture
Ductile iron pipes are manufactured by centrifugal casting process; this involves pouring iron into a fast revolving mould immersed in a running water bath rotating at a very high speed, creating a cylindrical shape as a result of the centrifugal forces created by the rotation of the mould.
At the same time, the mould is cooled from the outside subsequently lowering the molten metal temperature to allow solidification to take place. Once the cast is extracted from the centrifugal casting machine, it is then subjected to heat treatment to enhance its mechanical properties prior to hydrostatic testing and application of internal linings and external protective coatings