Ductile Iron Pipes for Water Mains

Mild steel ERW welded pipes are costly and scarce for use in water mains. Cast Iron spun pipes serve as an alternative with its inherent defect. Search for years have been on to improve the properties of case iron and the result is ductile iron spun pipes. In 1954, Japan started commercial marketing of ductile iron pipes. Today, besides Japan it is produced and used in many countries of Europe and the U. S. A.