•Transportation & trucking services
•Vent & drain holes
•Touch up & repair galvanizing product (ASTM A780)
•Expedite service 24-48 hour
Seattle Galvanizing Company works with a wide variety of clients and materials- we’re able to galvanize large material, small material, rails, and everything in between. We galvanize to ASTM standards and can provide certification upon request. If your metal needs to be sandblasted prior to hot-dip galvanizing, we’re able to connect you with a local sandblaster.
During the preparation process, every piece of steel is carefully inspected to make sure the surface is fully prepared for a quality finish.
Below is a list of some materials the cleaning chemicals used prior to galvanizing cannot remove or have a great deal of difficulty removing:
• Heavy/thick deposits of wax or grease
• Weld slag and other welding flux residues
• Crayon markers/oil-based paints
• Epoxies, vinyls, and asphalt
• Heavy or extremely adherent mill scale
• Heavy lacquer
• Weld splatter and anti-splatter
• Sand and other impurities on castings
These materials should be removed from the metal prior to it being delivered to the galvanizing plant. SSPC and NACE have a variety of commonly-used standards for abrasive blast cleaning, hand cleaning, and power tool cleaning, effective at removing these materials. Abrasive blasting is usually necessary on castings to remove sand and other impurities from the casting process.
Alternatively, different products can be used on the steel or iron which are compatible with the hot-dip galvanizing process to reduce the need for blasting or hand/power tool cleaning. For example, using uncoated electrodes avoids the problem of depositing flux on the metal during welding, and galvanizing-safe markers are available that dissolve in the cleaning baths used in the galvanizing process. Different types (specifications) of pipe can be ordered that are free of mill coatings such as varnishes, lacquers, or oils.
Seattle Galvanizing will contact you to get approval to go ahead with the blasting service.
Single-dip dimensions of 44' 6" (length) x 5' 8" (width) x 8' 8" (depth).
Double-Dip method: 65' (length) AND 17' (height)
Hot-dip galvanizing is the metallurgical bonding (alloying) of zinc onto fabricated iron or steel by the immersion of the iron or steel into molten zinc. The galvanized coating provides both barrier and cathodic protection against corrosion, with an expected service life typically in excess of fifty years.
The key to painting or powder-coating over hot-dip galvanizing is proper surface preparation. A comprehensive guide to painting over galvanizing is published by the American Galvanizers Association and can be downloaded from their website.
We galvanize to ASTM A123, "Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products." This specification covers coating thickness, finish appearance, and all other factors relevant to acceptable galvanizing practices.
American Galvanizing Association www.galvanizeit.org
We charge based on the total end weight of the product after it has been hot-dip galvanized. For more details and information about our charges for other services, please call our corporate office at 206-783-3100.
Our minimum charge is $150.
Finished Product Pick up
Monday – Friday
6:00 AM – 4:30 PM
Product Drop Off
Monday – Friday
6:00 AM – 10:00 PM
For weekend arrangements, please contact Juan Marquez at 206-783-3100 x107.
We partner with various local sandblasting companies. For more details, please reach out to Juan, our shipping & receiving manager at 206-783-3100 x107.