double beam bridge crane twin beam bridge crane twin beam overhead bridge crane twin beam overhead crane in bridge type two beam crane in bridge type two beam overhead crane
Repairing the bend of double - beam overhead ladle by flame - rectification 用火焰矫正法修复双梁桥式起重机主梁水平弯曲超标
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Qd type electromotive double girder crane with bridge style is a general loading and unloading machine designed according to gb / t14405 - 93 standard Qd型电动双梁桥式起重机是根据gb / t14405 - 93标准设计的,是一种通用的起重装卸机械。