Custom 45 # zafi ya yi birgima manyan fam na diamita mama diamia Injiniya Injiniyan Injiniya

A takaice bayanin:

A cikin baƙin ƙarfe tube an lalace daga ƙarfe duka, kuma babu bututun karfe a farfajiya. Dangane da hanyar samarwa, za a iya raba bututun ƙarfe mara kyau zuwa bututun ƙarfe mara kyau, sanyi mai-sanyi ne, daskararre mai ƙwanƙwasa mara kyau, da kuma bututu mai laushi.

Dangane da siffar sashen, shambo na ƙarfe mara kyau sun kasu kashi biyu: zagaye da wata hanya. The Under bututun sun hada da murabba'i, m, triangular, hexagonal, guna, da kuma bites na taurari.