Lays out, assembles, installs and repairs pipe systems of various shapes, sizes, and related hydraulic and pneumatic equipment for steam, hot water, heating, cooling, lubricating, sprinkling, and industrial production and processing systems, applying knowledge of system operation, and following blueprints: Selects type and size of pipe, and related materials and equipment, such as supports, hangers, and hydraulic cylinders, according to specifications. Lay-out, cutting, grinding, fit-up all classes and sizes of pipes for turbine, boiler, exchangers filters and pumps piping lines.