For a SAW weld, the effective theoretical throat may be considered the equivalent of what?

For a SAW weld, the effective theoretical throat may be considered the equivalent of what?

• A. The same as the fillet size in millimeters
• B. The equivalent of the next larger fillet size expressed in millimeters
• C. The thickness of the base material
• D. Zero

Answer: (B)

In SAW welds, the effective throat is treated as the equivalent of the next larger fillet size expressed in millimeters. This approach accounts for the bead geometry and reinforcement typical of submerged arc welding, giving a conservative, consistent measure of the weld’s usable cross-section for strength checks. It isn’t simply the fillet size itself, nor the base material thickness, nor zero.

In SAW welds, the effective throat is treated as the equivalent of the next larger fillet size expressed in millimeters. This approach accounts for the bead geometry and reinforcement typical of submerged arc welding, giving a conservative, consistent measure of the weld’s usable cross-section for strength checks. It isn’t simply the fillet size itself, nor the base material thickness, nor zero.