What is the poles of the material
Street lamp poles are generally steel coil, welding and then hot galvanized spray treatment
Skeleton sculpture are generally iron skeleton, but also galvanized spray treatment, some stainless steel.
Street lights: street lights, is the road, street and public square on the lighting system
Usually in the night or dark when the start shiny, after dawn off.
The basic function of street lights is lighting, its additional role can be works of art, landmarks, road signs, telephone booths, message boards, mailboxes, collection sites, advertising light boxes and so on.