One: Casting ball valve, insiders at a glance to see out is casting, casting Simple said is to put iron into the furnace for melting, in the casting molding after the ball valve, this is casting, of course, in the casting process also has a lot of tedious processing technology.
Second: Forging ball valve, is also often said to forge steel ball valve, forging process: Forging is the use of forging machinery to pressure metal blanks, so that it produces plastic deformation, in order to obtain a certain mechanical properties, a certain shape and size of the forgings processing method. Forging and stamping belong to plastic processing properties, collectively known as forging.
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