... house,- water vapour permeability is 0,25 - 0,22Ng (compare with wood - 0,15Ng, brick - 0,05 - 0,1Ng),- high frost ... and boards in different specifications; finally, transport it into pressure steamer with steam-curing cart, and get the light cellular concrete after ... steam-curing with high temperature and pressure. Process Flow of an Annual Output ...