This part defines the structures and basic types,dimensions,technical requirements,installation adjustment,quality inspection,painting and markings for the upper clearance treadle (hereinafter referred to as the “upper treadle”) and lower clearance treadle (hereinafter referred to as the “lower treadle”)of rolling stock clearance treadle (hereinafter referred to as the “treadle”) for standard gauge railway.
This part is applicable to design,manufacturing and installation of the upper treadle(basic and broad types) and the lower treadle.
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