Original Text (This is the original text for your reference.)

Improvements in exchangers menosun calorcaracterizados by comprenderpor the tube through which the gas flows to enfriary an outer container surrounding the tube or said tubes and containing a boiling liquid-liquid or vapor; said container is constituted by a tubularo body is a tube that may lack costurao be welded to weld or by any other method accepted in the manufacture of pipes.