Sadip produces pipes of ductile iron u2013 a metal only dated few years back, specifically in the year 1948, as a result of an unusual event taking place when a small amount of magnesium was added to molten cast iron, the new metal had unique characteristics such as: high mechanical properties (tensile strength, elongation, hardness) About national cast iron products factory co. ltd. national castiron products factory company limited a record of excellence .. since its inception in 1975, national castiron factory company limited (ncfp), has been serving its clients, by targeting its products towards the cast metal parts and end user sectors. List of cast-iron companies over 16 in malaysia . milux corporation berhad. milux corporation berhad (formerly known as t. h. hin bhd. ) , malaysia's largest gas appliances manufacturer, is listed on the kuala lumpur stock exchange. About us riyadh foundry company profile grey cast iron ductile cast iron low alloy steel manganease steel riyadh foundry company is a casting unit established in the year of 1976, in the second industrial city of riyadh in saudi arabia.