N'ihe banyere usoro mmepụta ihe, a pụkwara kewaa ya na ọkpọkọ ígwè welded maka njem mmiri mmiri dị ala, ọkpọkọ ígwè welded, spiral welded steel pipes, wdg. Enwere ike iji ọkpọkọ na-enweghị ihe ọ bụla mee ihe dị iche iche nke mmiri mmiri na gas pipeline. Enwere ike iji ọkpọkọ welded maka pipeline mmiri, pipelin gas ...
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