Kusina musono: kuboorwa, kudhirowazve, kuvharirwa (multi-pass circulation process)
Welded: longitudinally welded, redrawn, annealed (multi-pass circulation process)
Packing: Tubing ironda repamwero rakaputirwa pasimbi / madhiramu emapuranga kana spools.
Ese madhiramu kana spools akazara mumakrete emapuranga kuitira nyore logistic kushanda.