acetylene
argon
balloon
bottle
butane
canister
carbon
cartoon
collection
compressed
concept
container
cylinder
danger
dangerous
dioxide
equipment
filling
flammable
flat
fuel
gas
gasoline
group
helium
hydrogen
icon
illustration
industrial
industry
isolated
kit
liquefied
liquid
lpg
metal
nitrogen
oxygen
pack
petroleum
pressure
propane
red
safety
set
steel
storage
tank
valve