kú alapin ti a lo fun iṣelọpọ ti ọpọlọpọ awọn patikulu igi pellet, lilo irin alagbara, irin X46Cr13 didara giga lati rii daju iṣelọpọ;HRC52-55;pellet ọlọ apoju awọn ẹya alapin kú
