Groove Weld

Groove geometry directly determines both heat input requirements and the amount of filler metal needed to achieve complete joint penetration, making the selection of square, V, J, or U preparation a balance between material thickness, weld process capability, and cost. Thinner materials often employ square grooves where access permits, while thicker sections require wider V or J grooves to ensure root penetration and avoid the slag pockets that trap defects.

The included angle of a V-groove affects both the speed at which the welder must travel and the total pass count; a 90-degree V demands more passes than a narrow 60-degree configuration but distributes heat more evenly. Groove welds can be qualified for partial or complete joint penetration depending on the stress state and inspection requirements of the finished assembly.