QT4-30B QT4-30B is a semi-automatic blocking machine, it adopts the motor mechanical driver and it can produce the concrete road pavers, concrete hollow bricks and all kinds of wall bricks, when it's equipped with 1500 type standing mixer, it can build a turnkey and economic concrete block production plant. It's with the advantage of Simple structure, easy to operate and maintain. Low cost, low power consumptiont and the performance of the whole equipment are stable and reliable. Production capacity Hollow block 390*190*190 4PCS/mould, 4800PCS/day (8hours) Cellular block 240*115*90 12PCS/mould, 14400PCS/day (8hours)