I-SS400 isoloko iqengqeleka ibe yintsimbi yocingo okanye intsimbi engqukuva, intsimbi yesikwere, intsimbi ecaba, intsimbi ye-angle, i-I-beam, intsimbi yesitishi, intsimbi yefestile, njl.Isetyenziswa ngokubanzi kulwakhiwo kunye nezakhiwo zobunjineli.Isetyenziselwa ukwenza imivalo yensimbi okanye ukwakha izakhelo zezakhiwo zefektri, iinqaba zokuhambisa i-voltage ephezulu, iibhuloho, izithuthi, iibhoyili, izitya, iinqanawa, njl.Intsimbi ye-C, i-D ingasetyenziswa njengentsimbi yobuchwephesha.
Imigangatho yokulawula: i-GB / T yasekhaya, i-ASTM ye-American standard, i-JIS yaseJapan eqhelekileyo, i-DIN yaseJamani