beer columns: material:stainless steel easy to install and operate beautiful outlook beer column: Material: stainless steel or carbon steelCapacity:50L to 5000L per dayBrewhouse: two kettle or there kettle or four kettle, stainless or copper outside.Fermenter: polyfoam interlayer, cold water interlayer, 20% excess headspace.We have several years beer equipment manufacture experience, can supply ...