Umuyoboro w'icyuma ni ubwoko bw'icyuma gikozwe mu kuzunguruka umurongo w'icyuma mu buryo bw'umuyoboro ku mpande runaka ya spiral (gukora inguni) hanyuma ukayisudira. Ikoreshwa cyane muri sisitemu y'imiyoboro ya peteroli, gaze gasanzwe no kohereza amazi. Diameter ya nominal ni dia nominal ...
Ibikoresho bifasha ibyuma bikozwe mubikoresho bya Q235. Ubunini bw'urukuta buri hagati ya 1,5 na 3,5 mm. Amahitamo ya diametre yo hanze arimo mm 48/60 (Imiterere yuburasirazuba bwo hagati), 40/48 mm (imiterere yuburengerazuba), na 48/56 mm (uburyo bw'Ubutaliyani). Uburebure bushobora guhinduka buva kuri m 1,5 kugeza kuri 4.5 m ...