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Ductile Iron Spun Pipes (disp) and Cast Iron Spun Pipes (cisp)Essay Preview: Ductile Iron Spun Pipes (disp) and Cast Iron Spun Pipes (cisp)Report this essayGeneralDuctile iron spun pipes (DISP) and cast iron spun pipes (CISP) both find usages in water supply, sanitation and housing. Cast iron spun pipes have traditionally been the major mode of.