Isikhwama se-Octagonal sealing
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Isikhwama Sokuvala Esiyi-Octagonal Sisetshenziselwa Zonke Izinhlobo Zokupakisha
Isikhwama se-Kraft sephepha eline-octagonal esivalwe isikhwama seziphu esiphansi esiphansi. Ukusetshenziswa kwephepha le-kraft kungandisa impilo yeshalofu yokudla futhi kubukeke okusezingeni eliphezulu.