The maximum fillet size on a tube-to-drum seal weld should be?

The maximum fillet size on a tube-to-drum seal weld should be?

• A. 1/2 Inch
• B. 3/4 Inch
• C. 3/8 Inch
• D. 1/4 Inch

Answer: (C)

In a tube-to-drum seal weld, the fillet size controls how much heat and filler metal you put into a joint that is already thin-walled and need to seal rather than bear heavy loads. You want enough weld to create a reliable seal, but not so much heat input that the tube or drum walls distort, warp, or burn through. A fillet size of 3/8 inch hits that balance: it's large enough to seal effectively but small enough to keep heat input and distortion under control. Larger sizes would introduce more heat and potential distortion, while a smaller size might not provide a dependable seal. So the maximum practical fillet for this type of seal weld is 3/8 inch.

In a tube-to-drum seal weld, the fillet size controls how much heat and filler metal you put into a joint that is already thin-walled and need to seal rather than bear heavy loads. You want enough weld to create a reliable seal, but not so much heat input that the tube or drum walls distort, warp, or burn through. A fillet size of 3/8 inch hits that balance: it's large enough to seal effectively but small enough to keep heat input and distortion under control. Larger sizes would introduce more heat and potential distortion, while a smaller size might not provide a dependable seal. So the maximum practical fillet for this type of seal weld is 3/8 inch.