... beam of roof and pillar press best.then you can see,it can save the material and cost,it also fighting ... material coal stone,stone dust and other silicon materials. Detailed Product Descriptionaerated autoclaved concrete plant, AAC block,aac production line,aac ... , forming, cutting, evaporating and curing, crane cramp, transporting etc.,1 Product weight is according to 600kg/m3 to control.2 annual ...