Closing or sealing vent holes in any steel that has been Hot Dip Galvanized can be time consuming and expensive. If the closure is done by welding the Vent Hole shut, the welding process will also do a lot of damage to the galvanized surface.

First this article will describe the condition known as Hydrogen Embrittlement. Further below it will get into how and why Hydrogen Embrittlement is an important factor when Galvanizing any steel or alloy product.