A multiple wall tank for the storage of liquids is manufactured from a rigid, single wall inner tank having at least one aperture by applying an outer sheath over the inner tank, removing a portion of the tank surrounding the aperture, applying a layer of a synthetic resin material to the inner tank...http://www.google.fr/patents/US6026977?utm_source=gb-gplus-shareBrevet US6026977 - Multiple wall storage tank having an extruded outer jacket bonded around an aperture
Multiple wall storage tank having an extruded outer jacket bonded around an ...
