Ankɔri bololanɛgɛw ye ɲɔgɔndan kunbabaw ye minnu bɛ minɛnw siri jusigilanw na. Fɛn sugandili bɛ nɔ bila u ka doni-tacogo la, u ka sɔgɔli kunbɛncogo la, ani u ka baarakɛ waati la. Ka kɛɲɛ ni baarakɛyɔrɔ ni poroze ka magow ye, ankɔri bololanɛgɛw bɛ se ka tila suguya saba ye: nɛgɛ karɔbɔli, nɛgɛ min bɛ kɛ ni nɛgɛ ye, ani nɛgɛ min tɛ sɔgɔ.
Karbon nɛgɛ ye ankɔri bololanɛgɛ ye min bɛ kɛ ka caya, o la, fɛn minnu bɛ kɛ tuma caman na i n’a fɔ Q235 ani Q345. Nin fɛn in bɛ musaka dɔgɔman di ani fanga bɛ danma. Hot-dip galvanizing walima sherardizing furakɛli bɛ se ka dɔ fara sɔgɔsɔgɔninjɛ kunbɛnni kan, o b’a to a bɛnnen don iziniw ni sigiyɔrɔw jusigilanw jɔli ma caman na. Misali la, Q235 nɛgɛ bololanɛgɛw bɛ kɛ ka caya ka minɛnw sigi minnu tɛ-doni girinman-minɛnw sigi, k’a sɔrɔ Q345 nɛgɛ, k’a sababu kɛ a ka sɔrɔ fanga ka bon, a ka teli ka kɛ ka masin belebelebaw walima bɔlɔn jusigilanw siri.
Nɛgɛ minnu dilannen don ni nɛgɛ ye (i n’a fɔ 40Cr ani 35CrMo) bɛ dɔ fara u fanga n’u gɛlɛya kan kosɛbɛ ni fɛnw farali ye u kan i n’a fɔ chrome ni molibdène, o b’a to u bɛnnen don doni caman-doni walima bɔgɔbɔgɔ-doni cogoyaw ma. O bololanɛgɛ ninnu fagali ni u sɔgɔli kɔfɛ, u bɛ se ka sɔgɔli fanga sɔrɔ min bɛ tɛmɛ 800 MPa kan, wa u bɛ baara kɛ kosɛbɛ sigida gɛlɛnw na i n’a fɔ nɛgɛso minɛnw ani kemikɛli masinw. A ka c’a la, nɛgɛdaga minnu dilannen don ni nɛgɛ ye, olu bɛ kɛ ni nɛrɛmuguma walima fositɛri furakɛli ye walasa ka sanfɛla sɔgɔli kunbɛncogo ɲɛ.
Nɛgɛdagafɛnw (i n’a fɔ 304 ani 316) de ye sugandili ɲuman ye sigida nɔgɔlenw na, asidi bɛ minnu na, ani yɔrɔ minnu bɛ kɛ ni alkali ye, k’a sababu kɛ u ka sɔgɔsɔgɔninjɛ kunbɛncogo ɲuman ye. 304 nɛgɛdaga bololanɛgɛw bɛnnen don sɔgɔsɔgɔninjɛ lakanani bɛɛ lajɛlen ma, k’a sɔrɔ 316, k’a sababu kɛ a molibdɛni hakɛ ye, a bɛ baara kɛ ka ɲɛ kɔgɔjida laminiw na walima kemikɛli kɛcogo la. Hali ni nɛgɛ inox bololanɛgɛw sɔngɔ ka gɛlɛn, u ladonni-ko tɛ min na, o bɛ dɔ bɔ kosɛbɛ baara musaka kuntaalajanw na.
Ni o tɛ, nɛgɛ walima titaniyɔmu sɔgɔlenw bɛ se ka kɛ baara kɛrɛnkɛrɛnnenw na, nka o baara man ca ka da musaka ni baarakɛcogo gɛlɛyaw kan. Kuma surun na, fɛnw sugandili ka ɲɛsin ankɔri bololanɛgɛw ma, o bɛ jateminɛba kɛ masinw cogoyaw kan, sigida bɛnbaliya, ani musaka{1}}nafa sɔrɔli walasa ka poroze lakana ani ka muɲu.