Special steel for electric hoist
Electric gourd has no special type of steel, it is made by steel mill by rolling form.
If the owner needs the data, ask the building's main website for a look, or buy a "hardware manual". It can find the type and corresponding parameters of the i-steel.
I-steel is only a light beam and hot rolled steel. The general gourds are made of hot rolled steel. The model is to look at the tonnage of the gourd, and different weights of gourd are different. So the model that the building master asks to wait
