2018CJ/T 523-2018 Peripheral transmission mud scraper for radial flow sedimentation tank for sewage treatment
1996CJ/T 3042-1995 The scrapjer with peripheral drive for radial flow sedimentation tank in sewage treatment plant
CJ/T 3042-1995 The scrapjer with peripheral drive for radial flow sedimentation tank in sewage treatment plant was changed to CJ/T 523-2018 Peripheral transmission mud scraper for radial flow sedimentation tank for sewage treatment.