This Proco customer figured they could use ductile iron flanges on their 443-BD expansion joint because the 78% sulfuric acid wouldn’t get on the outside of the process piping. After 3 years, turns out the best case scenario wasn’t real life. They’ve since switched to using 316 stainless flanges. - INTEREP Inc.

This Proco customer figured they could use ductile iron flanges on their 443-BD expansion joint because the 78% sulfuric acid wouldn’t get on the outside of the process piping. After 3 years, turns out the best case scenario wasn’t real life. They’ve since switched to using 316 stainless flanges.

This Proco customer figured they could use ductile iron flanges on their 443-BD expansion joint because the 78% sulfuric acid wouldn’t get on the outside of the process piping. After 3 years, turns out the best case scenario wasn’t real life. They’ve since switched to using 316 stainless flanges.