Helpers--Pipelayers, Plumbers, Pipefitters, and Steamfitters:

Set-up production equipment or machinery
Cut metal or plastic material
Cut openings in existing structures
Cut pipe or piping material for gas, air, hydraulic, refrigeration, water, or steam lines
Connect sections of drill pipe
Don/Doff installation, maintenance, or repair related Personal Protective Equipment (PPE)
Bend tubing or conduit
Operate pipe fitting equipment
Bend pipe for gas, air, hydraulic, refrigeration or water lines
Weld metal structures
Apply flux to workpiece before soldering or brazing
Perform basic plumbing
Install plumbing, piping, or water handling systems
Cut construction material
Install heating, ventilation, or air conditioning (HVAC) equipment
Thread pipe for gas, air, hydraulic, refrigeration, or water lines
Shape construction materials such as wood
Drill holes in construction materials
Install building fixtures
Assemble/Disassemble manufactured plumbing or piping products by hand
Apply adhesives, caulking, or sealants

Mark reference points or cutting lines on workpieces
Join wood or other construction materials
Fit construction materials such as wood
Repair structures in construction, repair, or manufacturing setting
Move heavy objects in installation, maintenance, or repair work
Remove tools, equipment, casings, or pipe from wells
Move construction or extraction materials to locations where they are needed
Dig holes or trenches
Lay pipe into trench
Build structures in construction, repair, or manufacturing setting
Install storm, sanitation, or water piping systems above and below ground
Move materials, equipment, or supplies
Remove worn, damaged or outdated materials from work areas
Clean rooms, floors, or facilities in installation, maintenance, or repair settings