In pipe welding, why does the process need a cap? What is wrong with leaving it flush in level like the rest of the pipe? - Quora
![Welding of 12-mm thick plate, weld cap, and weld root appearances with... | Download Scientific Diagram Welding of 12-mm thick plate, weld cap, and weld root appearances with... | Download Scientific Diagram](https://www.researchgate.net/publication/340166865/figure/fig20/AS:873201697554433@1585198916393/Welding-of-12-mm-thick-plate-weld-cap-and-weld-root-appearances-with-plasma-cut.png)
Welding of 12-mm thick plate, weld cap, and weld root appearances with... | Download Scientific Diagram
![2 Pcs Welding Cap Flame Resistant Welders Caps Reversible Cotton Soft Short Crown Welders Hats with Elastic for Men Women Electrician(Black, Red) : Amazon.co.uk: DIY & Tools 2 Pcs Welding Cap Flame Resistant Welders Caps Reversible Cotton Soft Short Crown Welders Hats with Elastic for Men Women Electrician(Black, Red) : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/71Pj3-NJ6VL.jpg)
2 Pcs Welding Cap Flame Resistant Welders Caps Reversible Cotton Soft Short Crown Welders Hats with Elastic for Men Women Electrician(Black, Red) : Amazon.co.uk: DIY & Tools
![Welding sequence for buttering, root, hot, fill and cap passes of the... | Download Scientific Diagram Welding sequence for buttering, root, hot, fill and cap passes of the... | Download Scientific Diagram](https://www.researchgate.net/publication/280443290/figure/fig1/AS:284448781291524@1444829282575/Welding-sequence-for-buttering-root-hot-fill-and-cap-passes-of-the-circumferential.png)