Why we need to verify the gap of socket weld?
To permit the thermal expansion of pipe during welding operation.
Thanks and one more questions:
- Max. and Min. in mm are allowed?
- Which NDT method application to check the gap?
Generally 1.5mm before welding & i dont know in depth.
RT is used for measuring the gap after welding.
Only shot a film to verify the gap, no IQI selection, right?
In this case, we also review the throat thickness of fillet weld.