Mild steel pipe annealing organization ferrite and pearlite is lower its strength and hardness, ductility and toughness. Therefore, the cold formability is good and can be crimping, bending, punching and other methods of cold forming. Like that mild steel pipe has good weldability. Carbon contents from 0.10% to 0.30% of mild steel is easy to appliy all kinds of processing such as forging, welding and cutting, commonly used in the manufacture of chains, rivets, bolts, shafts, etc. Mild steel pipe is generally applied for the production of building components, containers, tank, furnace and farm machinery.