回油管路 return line ; oil return line ; used oil pipe ; return oil line

泄油管路 drain line

供油管路 Oil feed line ; oil supply line ; fuel supply line ; supply oil line

燃油管路 fuel line ; oil fuel pipe ; Fuel pipeline ; fuel piping

残油管路 stripping line

石油管路 Petroleum Pipeline

吸油管路 Inlet Line

热油管路 hot oil pipeline

滑油管路 oil line