Materials
Preparing galvanised steel for welding
Quick answer
Prepare galvanised steel by cleaning grind the gal off the weld zone where you can — it's faster than fighting porosity. On this material, cleanliness decides weld quality more than machine settings do.
The prep routine
- grind the gal off the weld zone where you can — it's faster than fighting porosity
- Clamp or tack so the joint can't walk as heat goes in
- Check fit-up: gaps eat filler and heat control
- For multi-pass, brush and inspect between passes
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