Some Basics About Flu and Colds. Each year, Americans get more than 1 billion colds, and between 5 and 20 percent. of Americans get the flu. The two diseases have some symptoms in common, and. both are caused by viruses. However, they are different conditions, and the flu is. more severe. Unlike the flu, colds generally don ât cause serious complications, such. as pneumonia, or lead to hospitalization.
Bonderized steel is actually Galvanized steel that has been put through a phosphate bath and has a layer of Chromate applied and dried. The process produces a dull gray colored finish which provides for a good primer in order to be painted.
Brazing, simply put, is joining metal to metal by filling the joint with a different, melted metal at temperatures over 840F. The melted metal filling the gap must be able to wet the pieces being joined so that it is drawn into the gap by capillary action. Below 840F, the equivalent process is called soldering.