Mmetụta nke pickling na passivation n'oge prefabrication, ịgbado ọkụ, ule, na okpomọkụ ọgwụgwọ ga-eme ka ígwè oxide, welding slag, griiz, na unyi ndị ọzọ na-agbakọta n'elu nke ọkpọkọ (carbon ígwè ọkpọkọ, carbon ọla kọpa ọkpọkọ, igwe anaghị agba nchara ọkpọkọ). , nke ga-ebelata corrosion re...
GỤKWUO