cylindrical or cubic. vertical or horizontal. on legs, on self supporting base,on concrete base. with warming/cooling systems (jacket, half-pipe, limped coil, dimpled plate, sprinkler, internal coil). single-wall or insulated with welded or cladded covering. atmospheric or pressurized/FV. inner surfaces F1, 2B, satin, mirror polished up to Ra <0.25 micron. external surfaces F1, 2B, satin, mirror polished up to Ra <0.25 micron.