N'ozuzu, sandblasting na ogbugba ogbugba bụ isi ụzọ maka metal ngwaahịa elu ọgwụgwọ : ire a siri ike n'elu, roughen a ire ụtọ n'elu, kpụrụ a elu, ma ọ bụ wepụ elu conteminants wdg Shot gbawara: Ọ na-ewe centrifugal ike nke elu na-agbagharị agbagharị diski. gbaa ígwè...
GỤKWUO