Alloy tube (Alloy pipe) wani nau'i ne na bututun ƙarfe maras sumul, aikinsa ya fi na bututun ƙarfe na gabaɗaya, saboda wannan bututun ƙarfe a ciki yana ɗauke da Cr, ƙarfin zafin jiki, ƙarancin zafin jiki, aikin lalata da sauran marasa bututu. haɗin gwiwa bai daidaita ba, don haka mor...
Kara karantawa