QT4-15 is fully auto concrete block making machine with high production. Details: (1) The material stock hopper and the material feeding hopper are separated, for the purpose of quantitative materials, which can effectively control the advanced liquefaction of some concrete and reduce the feeding time. (2) The unique material-feeding device can quickly discharge the material into the moulding box evenly, so that weight error in finished products can ben reduced to a minimum. (3) This machine can not only used for making concrete blocks of high strength, but also for fly ash bricks, cinder bricks, slag bricks and so on. And by changing differient moulds, all kinds of hollow blocks and solid bricks can be produced
