Waya nwere mmanya bụ ụdị ogige nchedo ọhụrụ nwere uru dị ka ọmarịcha mma, ọnụ ahịa akụ na ụba na ịdị mma, yana ịrụ ụlọ dị mma.Ọ na -arụ ọrụ nchekwa n'ime ogbunigwe, ubi na ụlọ, ókèala, nchekwa, na mkpochi ụlọ mkpọrọ.
A na -eji nchara dị nchara dị mma mee eriri eletriki galvanized, site na ịbịaru waya, galvanizing waya na usoro ndị ọzọ. Electro galvanized iron waya nwere njirimara nke mkpuchi zinc dị mma, nguzogide corrosion dị mma, mkpuchi siri ike zinc, wdg.