Prestressed Post tensioning gburugburu ihe owuwu Galvanized Sheet Spiral Ducting Corrugated
corrugated ọkpọkọ igwe a ụdị ngwá maka amị pre-stressed ihe edobere ọwara metal Bellows na-eme ka galvanized ígwè warara eriri igwe n'ime anọ ife udi mgbe ahụ undercuts na swages itinye bells, nke na elu arụmọrụ na obere olu, Easy ọrụ na mmezi, adabara. na ọsọ mgbanwe.Ọ dị mma maka iji ya eme ihe na ebe a na-ewu ihe na ụlọ mmepụta ihe.