Iron is the one of the most metal that use in construction. In construction, we choose the uses of iron is choose depends on the properties to find the most suitable one. This essay will discuss about the wrought iron and cast iron, to choose the most suitable can use in pipe construction.

when pig iron is melted, the result is wrought iron. wrought iron is mostly use in roof construction. this iron is a strong iron but just not as strong as the steel. wrought is malleable and ductile and easy to work. this iron will melt at 28000F.

cast iron contains 2 to 5 % of carbon. this iron is malleable and will not rust but it is easy to crack. it will melt at 12000c. cast iron is strong in compression but weak in tension. because it is very weak, this iron will not be use in construction. this iron will only use in pipe construction and part of pump

from the description above, we can say that the cast iron is mast better materials that we can use in pipe construction. although it is weak, but the materials is the most suitable for pipes