acetylene
air
argon
background
blue
bottle
carbon
carbon dioxide
chemical
co2
compressed
container
control
cylinder
cylinders
danger
dangerous
dioxide
emergency
energy
equipment
extinguisher
factory
fire
gas
gauge
hose
industrial
industry
liquid
metal
nitrogen
object
oxygen
pipe
power
pressure
protection
red
regulator
safety
security
steel
storage
tank
technology
tool
valve
welding
white