The folding stairs are useful in platforms and landings of tankers, which allow to overcome the gap of access to the roofs of the trucks in a safe way for the operator. They stand out for their hardness and resistance in harsh industrial and corrosive environments, showing minimal wear. The folding stairs let a safety acces to the tanker manhole .
They incorporate galvanized and antiskid steps, handrails, knee frames and a locking device to unlock. They are balanced through a spring cylinder that allows easy handling and maneuverability.