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化管理处编码[BBX968T-XBB8968-NNJ668-MM9N]钢格栅板理论重量钢格栅板理论重量型号理论重量(kg/㎡)型号理论重量(kg/㎡)G203/30/100G203/40/100G203/30/50G203/40/50G205/30/100G205/40/100G205/30/50G205/40/50G253/30/100G253/40/100G253/30/50G253/40/50G255/30/100G255/40/100G255/30/50G255/40/50G323/30/100G323/40/100G323/30/50G323/40/50/30/100G325/40/100G325/30/50G325/40/50G403/30/100G403/40/100G403/30/50G403/40/50G405/30/100G405/40/100G405/30/50G405/40/50G455/30/100G455/40/100G455/30/50G455/40/50G505/30/100G505/40/100G505/30/50G505/40/50G655/30/100G655/40/100G655/30/50G655/40/50