automatic red 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 ash as raw materials to produce high holes rateof hollow bricks. Through quenching and tempering,quenching, heat treatment and other crafts anduniversal joint connector,the ...