... 15000-20000pcs/h Advanced tech of ZT fly ash brick machine1.more durable2.high quality3.labor saving4.high capacity15000- ... in producing vacuum extruder, clay brick making machine, hollow brick making machine,Fired brick, Solid clay brick making machineAbout our machine:1. JZK ... series is suitable for producing all kinds of hollow brick and solid brick with raw materials like coal gangue, clay ,shale ...