steel is widely applied for industrial and civil contructions,such as warehouses, factory, high-rise buildings.
H beam is developed and optimized from I beam, a kind of economical profiled steel with a better mechanics capabilities. The web plates and the flanges are in plumb. The inner flange runs parallel to the outer one. Its flanges are very straight and the edges are clear, especially named by the similarity between the section shape and the letter "H".