GB Standard Round Barana amfani da su sosai a cikin gine-gine, masana'antar injina, motoci, sararin samaniya da sauran fannoni.A cikin ginin, ana amfani da sandunan ƙarfe sau da yawa don ƙarfafa simintin simintin don ƙara ƙarfin ɗaukar nauyi da juriya.A fagen kera injiniyoyi, ana yawan yin sandunan ƙarfe zuwa sassa daban-daban, kamar bearings, shafts da screws.A bangaren kera motoci da na sararin samaniya, ana kuma amfani da sandunan karfe wajen kera sifofi da kayan aikin ababen hawa da jiragen sama.