Welding galvanized steel

High quality welds can be made on galvanized steel
It is best practice to try and ensure all fabrication takes place prior to hot dip galvanizing. Normally, taking into account the need for design for galvanizing, this can be achieved, so ensuring the continuity of the galvanized coating over the whole of the article. However, in individual cases it may be necessary to make alterations to a galvanized component or to join two separate galvanized components such that welding will be required.Â
- Good ventilation should be maintained where galvanized steelwork is welded in an internal environment
- Remove the galvanized coating for a distance of at least 25 mm either side of the intended weld.
- A small increase in the welding current may be made to help maintain the welding arc’s stability
Contact us for information on welding galvanised steel
Detailed recommendations for this and other fusion welding processes are available from Galvanizers Association.
Feel free to contact us using the contact form or give us a call at +44 (0) 121 355 8838.
While zinc is a necessary trace element in the human diet and it does not accumulate in the human body, the inhalation of freshly formed zinc oxide fumes can cause a transient ‘metal fume fever’ with symptoms similar to influenza. To maintain fume levels within acceptable levels, extraction should be provided when welding galvanized steel in confined areas, as indeed it should when welding uncoated steel. Wherever welding takes place, due note must be taken of the relevant COSHH regulations.