What kind of scam is it that someone comes into the construction site and asks for some steel bars?

Someone entered the construction site and asked for some steel bars. This is a scam called "Steel Thief". Liars will pretend to be construction workers or construction workers, and enter the site to claim that they need several steel bars for emergency construction. They will ask the staff on the construction site to help them get the steel bars, and then take them away and escape from the construction site. This kind of scam will bring losses and security risks to the construction site and related personnel. When someone enters the construction site to ask for reinforcement, you should first verify the identity and construction requirements of the other party and ask the other party to show relevant certificates and documents. If the other party can't provide proof or the identity is unknown, you refuse his request and call the police in time. At the same time, website administrators strengthen the management and monitoring of website security to prevent similar scams.