Ключевые слова: austria, balkan, balkan stream, bulgaria, construction, construction site, cooperation, crane, delivery, distribution, distribution of gas, energetics, eu, europe, excavator, export, gas, gas line, gas main, gas pipeline, gaspipe, gastransmission, hub, hungary, laying, line, methane, natural gas, nord stream, oil, petroleum, petroleum company, petroleum industry, pipeline, russian, second line, serbia, slovakia, steel pipe, stream, supply, trade, traffic, transit, tube, tubing, turkish, turkish stream, under construction, works,