... structure,LS was considered as the replacement of GX type machine in 1990s domestic.Compared with GX type ,the bicephalous bearing ... .Materiel requirments:powder,granule, patch and scattered material such as cement, dust coal, food, fertilizer, inder, sand. The temperature must be ... .120173.116139.0LS1250125063025381.720305.416244.313 screw conveyor helix conveying machine