Ihe owuwu ụlọ ASTM A283 steel I beam

Otu I-beam, nke a makwaara dị ka H-beam (maka kọlụm zuru ụwa ọnụ, UC), w-beam (maka "flange sara mbara"), okirikiri ụwa (UB), nchara nchara (RSJ), ma ọ bụ okpukpu abụọ-T ( karịsịa n'asụsụ Polish, Bulgarian, Spanish, Italian na German), bụ osisi nwere akụkụ obe nke I ma ọ bụ H. Akụkụ ndị kwụ ọtọ nke I bụ flanges, na akụkụ kwụ ọtọ bụ "web". A na-ejikarị ígwè arụ ọrụ eme ihe I-beams ma jiri ya rụọ ọrụ na injinia obodo.