Fit-up, bevel, root opening and cleanliness basics
Remove oil, paint, scale and contamination as required by the process and procedure. Galvanized coatings create hazardous fumes and require appropriate controls.
Thicker groove welds often require a bevel and controlled root opening to achieve the required penetration. Exact angles, land and gap depend on the WPS/joint design.
Tack sequence, clamps, magnets and strongbacks help hold alignment. Recheck dimensions after tacking because weld shrinkage can pull the assembly.
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