Thread: Galvanising

Regarding tapped holes getting filled up with gal, if you fill up the tapped hole with silastic, it will keep the acid out of the hole and when they dip the product into the molten zinc the silastic may burn away, but the zinc wont be attracted to the steel because it has not been cleaned by the acid.

Cheers,
Mick.

Originally Posted by TimNZ

Also be aware that sand blasting will affect the finish.
Cheers,

Sorry Tim, what do you mean, in what manner does it affect?? Are you indicating not to sandblast before galvanizing.

Regards,
Nav

You will not get a smooth finish if younsand blast also galv will have dull finish.