(2) for the steel frame 5mm, much stronger
(3) 2.2kw mortor, 3kw vibrator(upper mould) and 2x2.2kw vibrator(down mould), the hollow block
pressure 8-10Mpa, solid blocks pressure 10-12Mpa.
(4) For the moulds: high temperature
carburizing heat treatment, it is durable.
(5) low investment for small scaled factory.