[Scrambler Bob]

How about our old, lead pipes?

[PeterPrinciple]

https://www.cnn.com/2023/10/11/middleeast/hamas-weaponry-gaza-israel-palestine-unrest-intl-hnk-ml/index.html

This is an interesting article. They are not backward people. They have a lot of our milling and industrial machining tools from WWI and WW2

They are many videos of backyard industrial foundry and milling.

https://www.youtube.com/watch?v=U3ZQvGu09y0

https://www.youtube.com/watch?v=OPjrP_dQlms

[smokingfrog]

Pipe used to make a rocket would need to be strong enough to handle the heat and pressure of a rocket motor. Lead would not work.