Автор статьи - Алексей Игоревич Поздеев, студент 4 курса Теплотехнического факультета ИжГТу им. М. Т. Калашникова.

The use of polypropylene tubes began almost simultaneously in Europe, USA and Japan in the early 50's of XX century. These tubes are due to a number of positive properties is actively began to replace steel and cast iron.

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