Ihe mkpuchi ahụ bụ ngwaahịa dị elu nke mmepụta ọkpọkọ ígwè.Enwere ọtụtụ ụdị casings.The casing dayameta nkọwa si 15 edemede na nkọwa, na elu dayameta nso bụ 114.3-508mm.The ígwè akara ule bụ J55, K55, N80 na L-80.Ụdị 11 nke P-110, C-90, C-95, T-95,...
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