Ключевые слова: blue, canalization, chemical, closeup, construction, ecology, ecosystem, energy, engineering, equipment, field, gas, gas pipeline, gasoline, global, ground, industrial, industry, infrastructure, install, iron, metal, natural, ocean, oil, oil industry, petrol, pipe, pipeline, pipes, piping, plumbing, power, pvc, repair, sea, steel, structure, supply, system, technology, transportation, tube, under, underwater, valve, water, work,