15kg/m Underground Railway manufacturers
Category: Sports Toys
According to the single weight of steel rail, it is divided into heavy rail and light rail. In China's railways, the rails of 50kg / M and above (such as 50kg / m, 60kg / M and 75kg / M) are called heavy rails, and the rails of 50kg / M and below (such as 38kg / M and 43kg / M) are called light rails.
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