Erection work in industry refers to the process of assembling and installing structural components, machinery, or equipment at a project site. This activity is commonly carried out in sectors such as construction, power generation, oil and gas, manufacturing, and chemical processing. Erection work typically involves tasks such as lifting, aligning, positioning, and securing of items like steel structures, heavy machinery, piping systems, and electrical panels.

The process begins with detailed planning and site preparation, followed by the transportation and safe handling of components. Specialized equipment like cranes, hoists, and rigging tools are used to lift and position materials. Once in place, components are fastened using methods such as bolting or welding, with a strong emphasis on accurate alignment and leveling to ensure proper function.

Safety is a critical aspect of erection work, requiring the use of personal protective equipment (PPE), adherence to job safety protocols, and the implementation of a permit-to-work system. Inspections and testing—such as dimensional checks, weld inspections, and pressure tests—are conducted to verify structural integrity and readiness for commissioning.