A na-emepụta tube na-enweghị ihe ọ bụla n'otu akụkụ, gbapụrụ ya ozugbo site na nchara gburugburu, na-enweghị welds n'elu, ma nwee ọtụtụ ngwa. N'ihi nhazi pụrụ iche nke tubes ígwè enweghị nkebi, carbon structural steel, obere alloy structural steel, wdg na-ejikarị eme ihe maka mmepụta, ...
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