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kare ni A Birebire Na: A Icyiciro na Oya ku i.A Icyiciro na Byakoreshejwe in Kinini Ingano Nka ya:, Nka ya:,, Amazi na Gikomeye.Compared with solid steel such as round steel, steel pipe is lighter when the bending and torsion strength is the same. ni A Bya Kwambukiranya - Icyiciro, ni Byakoreshejwe in i Inkoresha: Bya na, Nka, na.na Byakoreshejwe in.