Abstract: A continuous casting apparatus of a horizontal type is designed for simultaneous casting of a plurality of parallel strands from molten metal discharged from a common tundish. Each strand unit comprises a mold and a refractory conduit which are in contact with each other and in direct association with a clamping mechanism provided with means for adjusting the clamping pressure applied to said mold and conduit to enable closeness of contact therebetween. In combination with a cylinder mechanism intended for clamping conduits to a tundish, said clamping mechanisms provide for a fluid tight connection therebetween at the place of junction thereof.