For most fabricated structural and miscellaneous steel, hot dip galvanizing is a fairly basic process. The galvanizers follow the applicable specification, usually ASTM A123 / A123M, or the corresponding AASTHO spec. As most steel members or finished assemblies are stationary, excess zinc is not a problem.
Steel Manufacturing Blog: Keeping it Steel
Hot Dip Galvanizing: Threaded Steel, Anchor Bolts, Turnbuckle Rods & Threaded Studs
Tags: Anchor Bolts, Threaded Steel, Turnbuckle Rods, Hot Dip Galvanizing
Here's a quick note regarding Vent Hole Plugs. The large majority of customer requests are for aluminum Vent Hole Plugs. However, they are also available in zinc. There are several reasons a fabricator will request zinc rather than the less expensive and more malleable aluminum. The foremost reason would be potential corrosion. Mind you, we would be talking about corrosion over a very long period, possibly 20 to 30 years... but some jobs will call for the plug to be zinc.
Tags: Aluminum Plug, Galvanized Vent Plug, Galvanized Vent Hole Plug, Vent Hole Plug