Top secret formula for removal of mill scale on hr steel!!!
May 10, 2013· Top secret formula for removal of mill scale on hr steel!!! OK well maybe not top secret, but new to me and perhaps a few of you gents. ... rinse it down with Windex (make sure it has ammonia) or TSP. That will neutralize the acid. After that, rinse with clean water and lightly oil the piece and rust won''t be an issue. ... We sell the cakes ...