anyone can tell me the common steel tube material using for crane boom, both main chord and lattice boom. thanks !
Most aerial cranes (Erickson Skycrane) are used for tasks such as remote location work or expedious work. It takes awhile to erect a crane for one air conditioner unit to be replaced on top of a 5 story building or to replace a cable on a wire bridge. They are also widely used for fire supression.
Steel, like you said, do you want an exact specification? That will vary by whether it is a very long and slender tall crane or a shorter heavy duty for considerable loads. It may even vary depending on whether the manufacturer has as a goal an extra light weight unit using more expensive stronger steel or is willing to use thicker walls to use more ordinary steel. That is what engineers are for.
