Imiyoboro y'icyuma idafite icyuma gishyiramo ingufu nkeya kandi ziciriritse (GB3087-2018. , imiyoboro ntoya yumwotsi hamwe nu matafari yubakishijwe amatafari ya parike.

Impera z'umuyoboro w'icyuma zigomba kuba perpendicular kuri axe y'icyuma, kandi burrs igomba kuvaho.GB3087Umuyoboro usanzwe wibyuma mubusanzwe bikozwe mubintu 10, 20 bishyushye cyangwa bikonje byujuje ubuziranenge ibyuma bya karubone byubatswe, mubisanzwe bikenerwaumuvuduko w'amazie, kunyerera, gucana, gusibanganyanibindi bizamini kugirango umenye neza ibicuruzwa nibikorwa.