ERW welded ígwè ọkpọkọ: elu-ugboro na-eguzogide welded ọkpọkọ, mere nke na-ekpo ọkụ-akpọrepu ígwè efere, site na-aga n'ihu na-akpụ, ekwe, ịgbado ọkụ, okpomọkụ ọgwụgwọ, size, ịgbatị, ịkpụ na ndị ọzọ Filiks. Njirimara: Tụnyere ya na spiral seaam submerged arc welded steel ...
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