Nrụrụ dị n'elu ọnụ nke ọkpọkọ ígwè welded:

(1) igwe oyi akwa
Nchara mgbidi ígwè tube pụtara cross ngalaba kewara abụọ n'ala, kpughere ígwè elu na-egosi hierarchical vetikal cracks.Ụfọdụ ihe ngosi dị n'ime na n'èzí nke nchara agbapụtala ma ọ bụ welitere na mpaghara, na-egosipụta n'ụdị agbagoro na mberede, na-agbaji ma ọ bụ na-abanye na weld.
(2) àpà na-arapara n'ahụ
Ọkụ nnyapade ọkpọkọ na-ezo aka n'ime na mpụta nke nnukwu ihe nchara nchara nchara nchara.
(3) oghere
Pipe site na oghere na-ezo aka na mpaghara ígwè tube bi oghere dị.
(4) ịgbado ọkụ na-emeghe
welded ígwè ọkpọkọ oghere pụtara site ogologo cracks na nchara weld ma ọ bụ ele mmadụ anya n'ihu na-egosi.
(5) Mgbado ọkụ n'apata mpaghara
Ọkpụkpụ ígwè welded na-ezo aka n'akụkụ elu elu nke ọkpọkọ ígwè na-enye weld akụkụ arc.
(6) Ọwara ịgbado ọkụ
Pipe ịgbado ọkụ uzo bụ mpụta elu nke ígwè ọkpọkọ emee site ogologo uzo weld.
(7) ọdịda nke ịgbado ọkụ
welded ígwè ọkpọkọ ọdịda na-ezo aka na mpụta elu nke weld metal skeleton na-egosi site a ogologo trenchi, ebe elu nke kwekọrọ convex n'ọnụ.
(8) nkwonkwo ọkpọkọ dislocation
Steel tube nkwonkwo dislocation na-ezo aka nchara anwụrụ weld, mere onu nke staggered elu na ala.