Basic Info. Model NO. MRS87A Origin China HS Code 73021000 Production Capacity 5000ton/Year Application: The crane rail is a crane running route laid by rails, which ensures that the crane runs along the prescribed route and transmits the wheel pressure to the foundation. Crane rail can be divided into light rail type (P) and heavy rail type (QU). Small tonnage, medium tonnage crane rail uses P-type railroad rail, large tonnage gantry crane rail uses QU type crane special rail or square rail.