Umuyoboro wicyuma ni ubwoko bwicyuma.Ibisabwa byujuje ubuziranenge bwicyuma cya spheroidisation igenzurwa kuri 1-3 (igipimo cya spheroidisation “80%), bityo imiterere yubukanishi bwibikoresho ubwayo yarushijeho kuba myiza, hamwe nimiterere yicyuma, imikorere yicyuma.Umuyoboro w'icyuma ushyizwe hamwe, imiterere ya metallografiya ni ferrite hamwe na pearlite nkeya, ibikoresho byiza bya mashini, birwanya ruswa nziza, ihindagurika ryiza, ingaruka nziza yo gufunga, byoroshye kuyishyiraho, ikoreshwa cyane cyane mubigo bya komini, inganda n’amabuye y'agaciro gutanga amazi, gaze, amavuta n'ibindi.
Umubare munini wa grafitike ya grafitike ikwirakwizwa kuri materi ya ferrite na pearlite.Ukurikije ibisabwa bya diameter nominal no kuramba, igipimo cya ferrite na pearlite muri matrix kiratandukanye.Ikigereranyo cya pearlite muri diameter nto muri rusange ntabwo kirenga 20%, kandi ko muri diameter nini igenzurwa hafi 25%.
Ifite imiterere yicyuma, imikorere yicyuma, imikorere myiza ya anticorrosion, ihindagurika ryiza, ingaruka nziza yo gufunga, byoroshye kuyishyiraho, ikoreshwa cyane cyane mubigo byamakomine, inganda nubucukuzi bwamazi, gaze, peteroli nibindi.Nibwo buryo bwa mbere bwo guhitamo amazi, hamwe nigiciro kinini.Ugereranije numuyoboro wa PE, uhereye mugihe cyo kwishyiriraho, kwishyiriraho imiyoboro ya wino ya spherical iroroshye kandi byihuse kuruta umuyoboro wa PE, kandi umuvuduko wimbere ninyuma nibyiza nyuma yo kwishyiriraho;Duhereye ku kirere cyangiza na anticorrosive, nyuma yo gushyiramo inkeri ya spherical ink tube umuyaga mwinshi ni byiza, ariko kandi binyuze muburyo butandukanye bwo kurwanya ruswa kugirango tunonosore ruswa;Kubijyanye nimikorere ya hydraulic, ibisobanuro bya wino ya spheroidal muri rusange yerekeza kuri diametre yimbere, naho ibisobanuro bya PE tube muri rusange bivuga diameter yo hanze, kubera ko mubisobanuro bimwe, umuyoboro wino wa spheroidal ushobora kugera kumazi menshi;Uhereye kubushakashatsi bwuzuye no kubungabunga ibiciro, reba inkeri ya spheroidal ifite imikorere irenze igiciro.Urukuta rw'imbere rutera zinc, ibikoresho bya sima birwanya ruswa.