Mbere yo koherezwa ku cyambu, umukozi w’umukiriya yaje kureba imiyoboro idafite ibyuma.Iri genzura ryibanze cyane cyane kugenzura isura yumuyoboro wicyuma udafite kashe.Ibisobanuro bisabwa n'umukiriya byariAPI 5L /ASTM A106 Icyiciro B., SCH40 SMLS 5.8M.Dufite umurambararo w'inyuma kandi Uburebure bw'urukuta no kugaragara k'umuyoboro w'icyuma wasize irangi umukara hanyuma ugenzurwa.Uhagarariye abakiriya yagaragaje ko anyuzwe.Uyu munsi tuzapakira, dushyireho kashe kandi twohereze aho twohereza.Turizera ko abakiriya bazakira imiyoboro yacu yicyuma vuba kandi bagashyigikira imikoreshereze yabo mumishinga yabakiriya.