| 摘要 |
The present invention discloses a wholly wrapped railroad crosstie. It comprises an inner core and an outer casing that is made of deformable composite materials. The outer casing is molted and integrally united with and attached to the inner core as a whole when it is formed. The outer casing completely covers the inner core. There is no seam on the crosstie to prevent the separation and friction of the crosstie which greatly increases the reliability and service life of the crosstie, and reduces the cost of maintenance.
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