Ibhola lensimbi le-Junda carbon steel lihlukaniswe libe yibhola eliphakeme le-carbon steel nebhola lensimbi eliphansi le-carbon steel izinhlobo ezimbili, Kuye ngohlobo lwamabhola ensimbi ye-carbon steel asetshenziswayo, angasetshenziswa kunoma yini kusukela kuma-castors efenisha kuya kuma-sliding rails, imishini yokupholisha neyokugaya, izinqubo zokuchama, kanye nemishini yokushisela.