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Kukaniza magetsi welded ERW zitsulo chitoliro
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Chitoliro chachitsulo cha LSAW chomizidwa kwa nthawi yayitali
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Spiral submerged arc welded SSAW chitsulo chitoliro
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Magetsi / otentha-kuviika kanasonkhezereka zitsulo chitoliro
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Chitoliro chachitsulo / chubu chomangira
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304/316 chitsulo chosapanga dzimbiri welded chitoliro