The manufacturing process of I-beams mainly includes the following steps:

Raw material preparation:  Select appropriate steel raw materials, usually steel billets or ingots.
Pre treatment:  The raw materials undergo steps such as rust removal and impurity removal to ensure the quality of the steel.
Heating:  The raw material is heated to a high temperature for rolling.
Rolling:  The heated raw material is rolled by a rolling mill to form the basic shape of an I-beam.
Cooling:  The rolled I-beam needs to be cooled to ensure its structural and performance stability.