what is mild steel pipe​?

The annealed microstructure of low carbon steel consists of ferrite and a small amount of pearlite, with lower strength and hardness, and better plasticity and toughness. Therefore, it has good cold formability and can be cold formed using methods such as curling, bending, and stamping. This type of steel also has good weldability. Low carbon steel generally refers to steel with a carbon content between 0.10% and 0.25% This type of steel has low hardness and good plasticity, making it easy to use cold plastic deformation forming process, welding and cutting. It is commonly used in the manufacturing of chains, rivets, bolts, shafts, etc.

Low carbon steel is generally rolled into angle steel, channel steel, I-beam, steel pipe, steel strip or steel plate, and used to make various building components, containers, boxes, furnaces and agricultural machinery. High quality low-carbon steel is rolled into thin plates to produce deep drawn products such as car cabins and engine hoods; It is also rolled into bars for the production of mechanical parts with low strength requirements. Low carbon steel is generally not subjected to heat treatment before use. For parts with a carbon content of 0.15% or more, carburizing or cyanide treatment is required. It is used for shafts, shaft sleeves, sprockets, and other components that require high surface temperature and good wear resistance.

Low carbon steel is limited in use due to its low strength. Properly increasing the manganese content in carbon steel and adding trace amounts of alloying elements such as vanadium, titanium, and niobium can greatly improve the strength of the steel. If the carbon content in steel is reduced and a small amount of aluminum, boron, and carbide forming elements are added, an ultra-low carbon bainite composition can be obtained with high strength and good plasticity and toughness.