Distribution box hung on guardrail

The majority of safety guardrails used in industrial workplaces are made from fabricated steel. Steel guardrail was originally developed by Armco (The American Rolling Mill Company) in 1933 as highway guardrail but is often used in the factories and warehouses of the industrial sector, despite not being intended for this application. Simultaneously, another version of steel guardrail was developed by Kee Clamp Ste. [pdf]