Ключевые слова: barrel, business, cargo, conduit, delivering, delivery, energy, equipment, fuel, fueling, gas, gas pipeline, heat, industry, lay, lead, line, main, metal rolling, mineral oil, minerals, oil, oil pipeline, petrol, petroleum, pipe, pipeline, piping, power, pressure, purveyance, reliable, resources, running, squeeze, steel, supplier, supply, swap, swapping, system, transfer, transit, transmission, trunk, tube,