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Solid Ball Blanks
Solid valve ball blanks are for making solid valve balls which are made by all sorts of forged steels. -
Hollow Ball Blanks
Hollow valve ball blanks are for making hollow valve balls which are made by coil welded steel plate or seamless stainless steel tubes. The hollow ball reduces the load of the spherical surface and the valve seat because of its lighter weight, which helps to extend the service life of the valve seat.
