acetylene
air
balloon
barrel
butane
canister
carbon
caution
chemical
compressed
compressor
container
cooking
cylinder
dangerous
dioxide
energy
equipment
explosive
fire
flammable
fuel
gallon
gas
gasoline
helium
hospital
hydrogen
industry
liquefied
liquid
lpg
manometer
medical
metal
nitrogen
o2
oxygen
petrol
petroleum
pressure
propane
pump
refill
regulator
steel
storage
supply
tank
valve
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