Which term describes the symbol that indicates a uniform weld around all edges of a closed part?

Which term describes the symbol that indicates a uniform weld around all edges of a closed part?

• A. Weld-all-around
• B. Edge weld
• C. Lap weld
• D. Perimeter weld

Answer: (A)

Understanding how welding symbols indicate extent is essential. When a joint on a closed part must be welded uniformly around every edge, the symbol used is weld-all-around. The all-around indication means the weld goes all the way around the circumference, ensuring a continuous, uniform weld around the entire part. This is typically shown on the drawing as a circle or circular indication on the weld symbol, signaling that the weld is not just along a single edge or a partial length but surrounds the whole perimeter. An edge weld would imply welding along one edge only, a lap weld joins two overlapping plates, and a perimeter weld describes the outer boundary but doesn’t necessarily specify a full circumferential weld on a closed part. So, weld-all-around is the precise term for a uniform weld around all edges of a closed part.

Understanding how welding symbols indicate extent is essential. When a joint on a closed part must be welded uniformly around every edge, the symbol used is weld-all-around. The all-around indication means the weld goes all the way around the circumference, ensuring a continuous, uniform weld around the entire part. This is typically shown on the drawing as a circle or circular indication on the weld symbol, signaling that the weld is not just along a single edge or a partial length but surrounds the whole perimeter.

An edge weld would imply welding along one edge only, a lap weld joins two overlapping plates, and a perimeter weld describes the outer boundary but doesn’t necessarily specify a full circumferential weld on a closed part. So, weld-all-around is the precise term for a uniform weld around all edges of a closed part.