My question is about difference between Blowing (e.g Steam Blowing) and Purging (e.g Nitrogen Purging). What is the main difference between these two operations and for what service we use it.
Regards.
Hafiz Ali Alvi
Hi David, There are two points in WQT. 1. Thickness of Base Metal -T 2. Thickness of Weld Metal -t When you use a combination of two proces...
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