equipment

metal

cutting

steel

industrial

construction

industry

device

working

occupation

tool

fire

flame

heat

production

manufacturing

oxygen

iron

torch

engineering

skill

mechanic

worker

gas

mechanical

factory

spark

technician

spatter

welding

butane

propane

ignition

labor

molten

workman

welder

acetylene

work tool

natural gas

metal industry

welding torch

heavy duty

car part

metal cutting

car structure