Possibly rotary or spin casting.
I have done it with bronze but not steel.
Should possible

Originally Posted By: ellenbr
Too Meffert had some novel tube advancement referred to as >>Radialstahlläufe<< and for the moment I am not sure if that meant feature of tube making?

Cheers,

Raimey
rse


Dumb, but learning...Prof Em, BSc(ME), CAE (FYI)