Use all trade tools and equipment including pipe cutters, threaders, benders, soldering irons, hack saws, blow torches, 'snakes', caulking tools, etc., and work with various types of metallic, vitreous and plastic materials. Install and maintain steam and hot water heating systems, high pressure steam line, sprinkler systems and piping systems for air, oil, gas, paint, acids, solvents, etc., including pump and collectors.