blue
burner
business
butane
car
color
cook
cooker
energy
equipment
factory
fire
flame
fossil
fuel
gas
gasoline
gauge
heat
home
icon
illustration
industry
kitchen
line
metal
natural
oil
petrol
petroleum
pipe
pipeline
plant
power
pressure
production
propane
pump
refinery
service
sign
station
storage
stove
stroke
supply
symbol
tank
water