1) Welds metal parts, using gaswelding equipment as specified by layout, welding diagram, or workorder : Positions parts in jigs or fixtures on bench or floor, orclamps parts together along layout marks.
2) Selects torch, torch tip, filler rod andflux, according to welding chart specifications or type andthickness of metal.
3)Connects regulator valves and hoses to oxygen and fuel gascylinders, and welding torch.
4) Turnsregulator valves to activate flow of gases, lights torch andadjusts gas mixture and pressure, to obtain desired flame, based onknowledge of gas-welding techniques.
5) Holds torch at proper angle to metal andguides along weld joint, applying filler rod to molten area to formweld.
6) Examines weldfor bead size and other specifications.
7) Repairs broken or cracked metal objects,fills holes, and builds up metal parts.
8) May apply flux to workpiece instead offiller rod.
9) Maypreheat workpiece in furnace or with torch.
10) May layout, position and tack weldworkpieces.
11) Mayweld along vertical or overhead weld lines.
12) May scarf or groove weld prior to applyingfiller metal, using gas welding equipment.
13) May chip or grind off excess weld, slag,or spatter.
14) Mayclean or degrease parts, using wire brush, portable grinder, orchemical bath.
15) Maycut metal plates or structural shapes using gas torch.
16) May be designated according totype of gases used such as Welder, Acetylene; Welder, Oxyacetylene;Welder, Oxyhydrogen.
17) Important variations include type of metal welded,products, subprocesses, trade name of equipment, work site,high-production or custom, level of ambidexterity required or typeof joints welded.
18)May be required to pass employer performance tests or standardtests to meet certification standards of governmental agencies orprofessional and technical associations.