Mass production of steel square pipes - GIF

Mass production of steel square pipes.

<video controls autoplay loop style="max-width: 100%;">
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17432970375839.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>


Previously:

Coating pipes internally - GIF
Extruding water pipes - GIF
Forging metal pipes - GIF
Glowing newly manufactured pipes - GIF

Interesting, The size marked on the tubing at the end was 6"x6"x3mm. Must be for American products or it should have been 15cm x 15cm x 3mm.