Summary Certifies, fabricates, assembles, installs, alters, maintains and dismantles all piping and plumbing, including hangers and supports, and pipe cutting, bending and welding activities necessary to the performance of the task. Duties and Responsibilities Certifies, fabricates, assembles, installs, alters, maintains and dismantles all piping and plumbing, including hangers and supports, and pipe cutting, bending and welding activities necessary to the performance of the task. Installs, mai…