Icyuma cya Ruihua nu ruganda rukfd7d3=Icyiciro cya 304 ibyuma bitagira umwanda birimo chromium 18% na nikel 8%, bitanga uburyo bwiza bwo kurwanya ruswa kubikoresho byo mu nzu kandi byoroheje byo hanze. Icyiciro cya 316 kongeramo 2-3% molybdenum, bitanga imbaraga zo kurwanya chloride nibidukikije byo mu nyanja. Ibyuma bya Ruihua bibitse amanota yombi, hamwe nicyiciro cya 316 cyasabwe gushyirwaho ku nkombe, ibidendezi byo koga, hamwe nogutunganya imiti aho kurwanya ruswa byangiza amafaranga 15-20%.