Machubu achitsulo osasunthika osweka mafuta, sered ngati machubu a fumace, machubu osinthira kutentha ndi
mapaipi mumafuta amafuta ndi zomera zoyengedwera. High quality carbon structural steel grade ndi 20g,
20mng ndi 25mng; Aloyi structural zitsulo makalasi: 15mog, 20mog, 12crmog, 15CrMoG, 12Cr2MoG, 12CrMoVG, etc.