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Positions and joint preparation

See how the joint sits in each welding position and what a butt joint edge looks like before welding.

Welding positions

PA flat

The arrow g shows which way gravity pulls the pool.

Read more about welding positions

Butt joint preparation

Plate thickness
3–20 mm
α groove angle
60°
b root gap
1–3 mm
c root face
1–2 mm

Several passes on thicker plate.

Common practice for MMA on steel. Check the values against ISO 9692-1 and your WPS.

Read more about joint preparation