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Imbere ya galvanised pipe pipe / ibyuma byo gukoresha bitandukanye
H-beam nigiti cyubatswe gikozwe mubyuma.Irakomeye bidasanzwe.Irabona izina ryayo kuko isa nigishoro H hejuru yumurongo wacyo ， ibyuma bizunguruka hamwe na H-yambukiranya igice.Ubunini bungana muri flanges ebyiri zibangikanye nta taper iri imbere.