GB / T 5310 ni ubwoko bwa tariyeri.

Ibikoresho bihagarariye ni 20g, 20mng, 25mng. Nicyuma giciriritse giciriritse gifite manganese nkeya.

Uburebure bwogutanga ibyuka bigabanijwemo ubwoko bubiri: ingano ihamye nubunini bubiri. Igiciro cyibice bya buri muyoboro wo murugo kibarwa ukurikije uburebure bwagenwe, kandi igiciro cya buri tube kibarwa ukurikije uburemere nyabwo.

Ibipimo bibiri birashobora kugabanywamo ubwoko butatu:

Umutegetsi mugufi: akoreshwa mugukosora imiyoboro idasanzwe idafite icyuma ku nkunga;

Uburinganire buringaniye bwurukuta rwihariye rufite umuyoboro wicyuma (diameter yo hanze itarenza 32mm): ikoreshwa muburyo bwubukanishi, ibikoresho bya hydraulic bifite uburebure buhanitse kandi birangiye neza neza neza neza neza neza;

Umuyoboro w'icyuma udafite uburinganire (diameter yo hanze irenga 32mm cyangwa diameter y'imbere munsi ya 40mm): Ikoreshwa mubice bitandukanye byubaka, ibikoresho nibice bya mashini.