intends to Invite experienced and reputable persons having prime experience and capable of providing services of a plumber (as individuals or in a team).
Install pipe assemblies, fittings, valves, appliances such as dishwashers and water heaters, and fixtures such as sinks and toilets, using hand and power tools.
Cut openings in structures to accommodate pipes and pipe fittings, using hand and power tools.
Hang steel supports from ceiling joists to hold pipes in place.
Repair and maintain plumbing, replacing defective washers, replacing or mending broken pipes, and opening clogged drains.
Direct workers engaged in pipe cutting and preassembly and installation of plumbing systems and components.
Install underground storm, sanitary and water piping systems and extend piping to connect fixtures and plumbing to these systems.
Clear away debris in a renovation.
Install oxygen and medical gas in hospitals.
Use specialized techniques, equipment, or materials, such as performing computer-assisted welding of small pipes, or working with the special piping used in microchip fabrication