A na-eji waya igwe anaghị agba nchara dị elu, waya nickel, waya ọla kọpa, waya ọla, waya Monel, waya Hastelloy na waya igwe ndị ọzọ na-eji teknụzụ ịkwa akwa. Enwere ọtụtụ ngalaba nke usoro ịkpa akwa. Ntupu waya welded bụ ntupu emere site na ịgbado ọkụ eletrik nwere meta...
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