I-double girder gantry crane ingenise isidingo esinamandla semakethe ngenxa yezinga layo eliphezulu lokusebenzisa isayithi, ububanzi bokusebenza obukhulu, ukuguquguquka okubanzi kanye nokuguquguquka okuqinile, okwenza imisebenzi yokulayisha nokulayisha impahla ezimbonini ezifana nezokwakha imikhumbi, ukuthwala impahla, nezikhumulo zibe lula kakhulu. Njengo-o...
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