Carbon karfe bututun rufi ya hada da convex bututun rufi, cone shell, m sassa, flat rufi, da kuma tightening abubuwan da aka tsara na diameter rufi.
convex tube cap hada da: semispherical tube cap, oval tube cap, farantin tube cap da kuma ball crown tube cap. Daga hangen nesa na karfi, a hankali ba shi da kyau daga ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙudurin ƙ