... clay bricks making machine HT-5550 (15,000-18,000pcs/h) double vacuum, high pressure automatic red clay bricks making machine ... HT-5550 (15,000-18,000pcs/h)the machine applies to pages of rock, coal gangue,fly ... and tempering,quenching, heat treatment and other crafts anduniversal joint connector,the performance andusing life will be improved effectively. EquipmentsHT-5550HT ...