I-SS400 ivamise ukugoqelwa ibe yintambo yocingo noma insimbi eyindilinga, insimbi eyisikwele, insimbi eyisicaba, insimbi ye-engeli, i-I-beam, insimbi yesiteshi, insimbi yozimele wewindi, njll., namapuleti ensimbi aphakathi nendawo nawugqinsi. Isetshenziswa kabanzi ezakhiweni zokwakha nezobunjiniyela. Isetshenziselwa ukwenza imigoqo yensimbi noma ukwakha amafreyimu wokwakha ifektri, imibhoshongo yokudlulisela amandla kagesi aphezulu, amabhuloho, izimoto, ama-boilers, iziqukathi, imikhumbi, njll. Ibuye isetshenziswe kabanzi njengezingxenye zemishini ezingadingi ukusebenza okuphezulu. Insimbi yezinga C, D nayo ingasetshenziswa njengensimbi ethile yobungcweti.
Amazinga aphezulu: i-GB/T yasekhaya, i-ASTM evamile yaseMelika, i-JIS evamile yaseJapane, i-DIN evamile yaseJalimane