What is open-root groove welding?

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Study for the CSA Welding Inspector Certification Test (W178.2) Level 1. Use flashcards and multiple choice questions with hints and explanations. Prepare for your certification!

Multiple Choice

What is open-root groove welding?

Explanation:
Open-root groove welding refers to a groove joint where a root opening is left in the joint and the initial passes do not fill that root completely. The root opening is kept open or only lightly filled in early passes, and the root bead is added in later passes to complete the weld. This approach lets the welder control fusion and penetration from both sides and is commonly used when verifying the root is properly fused, especially on thicker sections or when root access is needed. The root bead produced in the later passes completes the weld and ensures full penetration along the joint.

Open-root groove welding refers to a groove joint where a root opening is left in the joint and the initial passes do not fill that root completely. The root opening is kept open or only lightly filled in early passes, and the root bead is added in later passes to complete the weld. This approach lets the welder control fusion and penetration from both sides and is commonly used when verifying the root is properly fused, especially on thicker sections or when root access is needed. The root bead produced in the later passes completes the weld and ensures full penetration along the joint.

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