Wadannan masu juyawa ne na wp9 na yau da kullun don amfani da su a cikin ayyukan kwastomomi masu rauni, duk da haka, matsakaicin aikinsu na yau da kullun, da kuma dukkanin abubuwan da aka sauya daban-daban.
Astm AN234 WP9 M Karfe Cob99 na WP9 Ma'anar bututun kayan aiki wanda abu ne na matsakaiciyar masana'antu a duniya da ke da samfurori masu yawa waɗanda ke da alaƙa.
Wanda ba a san tantance ba (Ashem F51) da unp2205 (1.4462, Astm F60). Wannan yana nuna sha'awar su kara lalata kayan lalata na kayan ado, godiya ga ci gaban aikin AOD, wanda ke ba da damar sarrafa abun da ke ciki. Bugu da kari, yana ba da damar tasiri matakin nitrogen matakin maimakon kawai kasancewa a matsayin asalin asalin. Sabili da haka, mafi girman maki na Duplex suna neman ƙara yawan abubuwan Chromum (cr), Molybdenum (mo) da nitrogen (n).