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It is a set of devices that are used to connect two parallel lines. This type of turnout makes it possible to cross one line from another, left or right degrees. Samples of this needle, which is manufactured by Irid company, have been used in the metros of Tehran, Tabriz, Qom, Kermanshah, Mashhad, Karaj, Isfahan, …

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Single turnout is the most common and widely used type of turnout. This turnout divides the main line into two straight and curved paths. This type of turnout is classified as right-handed or left-handed depending on which direction the turnout is extended. Examples of this turnout, which is manufactured by Irid, have been used in …

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