The white corrosion product can be removed with a weaker organic acid such as acetic acid.
Cleaning galvanized sheet metal.
Apply a light coat of paste wax or metal polish to the rinsed and dried surface to help protect the metallic finish.
Cleaning wet storage stain from galvanized steel.
Providing adequate air flow to newly galvanized surfaces.
If there are significant amounts of it it may not be possible to recover this product.
Make sure to avoid cleaning with harsh cleaners which could dissolve the zinc oxide in the galvanized coating and reduce the lifespan of your steel.
If the galvanized is showing signs of red rust then it is best to clean it with a phosphoric acid cleaner to remove that first.
An initial cleaning with a rag dipped in fresh water will remove any dirt or streaks on your galvanized steel.
Properly storing newly galvanized steel does both.
The best way to treat wet storage stain is to prevent it.
Clr a widely available household cleaning product can also be used to clean galvanized metal.
Preventing wet storage stain is accomplished in two ways.
Step 1 rinse with water.
Use another lint free cloth to buff the galvanized steel to a high sheen.
Removing standing water from newly galvanized surfaces.
Scrub metal with liquid laundry detergent.
Regular maintenance will reduce the amount of dirt and chemical buildup that forms on your steel over time and will make cleaning easier in the future.
Wipe down your galvanized steel with a damp rag.