A blueprint indicates a stitch weld on a critical load-bearing component. The weld symbol shows a fillet weld on the arrow side with a size of '8 mm', followed by '(50)-150'. There's also an 'FW' and a 'G' in the weld tail. What is the precise interpretation of '(50)-150' and the 'G' in the tail?

Question: A blueprint indicates a stitch weld on a critical load-bearing component. The weld symbol shows a fillet weld on the arrow side with a size of '8 mm', followed by '(50)-150'. There's also an 'FW' and a 'G' in the weld tail. What is the precise interpretation of '(50)-150' and the 'G' in the tail?

Answer options: ✅ Each weld segment is 50 mm long, spaced 150 mm apart (pitch), and 'G' means 'Grind flush'.

• The effective length of each weld is 50 mm, the minimum throat is 150 mm, and 'G' means 'Gas shielded weld'.
• The weld size is 8 mm, the pitch (distance centre-to-centre) is 50 mm, the length of each segment is 150 mm, and 'G' means 'Groove weld'.
• The length of each weld segment is 50 mm, and the distance between the ends of the segments is 150 mm. 'G' indicates a 'Ground finish'.

Correct answer: Each weld segment is 50 mm long, spaced 150 mm apart (pitch), and 'G' means 'Grind flush'.

Explanation: For intermittent (stitch) welds, the numbers in parentheses first specify the length of each weld segment, and the number following the dash indicates the pitch (centre-to-centre spacing of the segments). So, '(50)-150' means 50 mm long weld segments with a 150 mm pitch. 'G' in the weld tail stands for 'Grind flush' or 'Ground finish', indicating a specific post-weld finishing requirement.