See attached link
Youtube Video

In short, when trying to craft small pipes an load, only a metal roll is loaded.

Unfortunately a well known bug. The last type of a crafted cargo is loading "wrong". So you need to craft two and leave always one in stock. You'll have this bug as soon as you load it.

@hookerbot-4000
Hello!
Thank you for the report.
Can you send us the link to this vid to the snowrunner@saber3d.com?
Also attach your storage folder, here is the path to it: C:\Users\username\Documents\My Games\SnowRunner\base\storage
Mention the place on the map where do you face it and attach link to this report to the mail.

Thanks!