Successful hot dip galvanizing of fabricated steelwork is heavily dependent on design of the fabrication.
To be satisfactorily galvanized, the fabrication must be completely immersed in a series of pre-treatment baths to prepare the surface for galvanizing, and then be submerged in a bath of molten zinc at about 450oC.
If the pre-treatment chemicals and the molten zinc cannot get access to all surfaces, the item will not be effectively coated. Fabrication techniques can also either create or alleviate problems in the galvanizing process.
Industrial Galvanizers sales staff are available to advise on design for galvanizing, and will assist with design detailing prior to fabrication to ensure that a high quality hot-dip galvanized coating is applied to customers’ projects
Venting and draining needs to be considered on multidimensional angle fabrications
Avoid large overlapping surfaces, use packers between sections or weld toe-to-toe.