Install domestic, commercial or industrial plumbing fixtures and systems Cut opening in walls and floors to accommodate pipe and pipe fittings Join pipes using couplings, clamps, screws, bolts, cement or soldering, brazing and welding equipment Schedule personnel, tools and equipment Determine piping system requirements and pipe sizing Supervise other workers Estimate costs and materials Measure, cut, thread and bend pipes to required shape and size Utilize hand and power tools Measure and mark guidelines to be used for installations Professionalism in customer service Prepare and maintain work materials and supplies Determine layout and installation procedures