I am producing steel pipe (item 2) from a coil of steel (item 1).
for example an 8000 kg steel coil produces 1200 - 6 foot pipes and 34 kgs of waste steel.
How do I deal with the scrap steel?
I did a similar thing once with chemical assemblies. You can add the same assembly component more than once. So you could have the steel component of 8000kg, then add it again as wastage of 34kg.
Hopefully…