Carrying apparatus and hot-rolling apparatus, and carrying method and hot-rolling method

A transport device having supported in parallel at predetermined intervals a plurality of conveying rollers, the conveying rollers conveying the workpiece is heated from the holding furnace into the rolling mill, the delivery device comprising: an impact prediction data collecting unit, in the upstream of the heating holding furnace acquired data for predicting the size of the workpiece to impart the above-described impact rollers in the furnace in the heating of the transport roller in the holding furnace; and a control unit, obtains the impact prediction data collecting unit from the data to predict the size of the impact, according to the size of the shock is adjusted to be above the conveying speed of the workpiece in the holding furnace is heated.