精选优质文档-倾情为你奉上平焊法兰理论重量表 重量 PNDN0.250.61.01.62.5100.360.360.610.610.61150.410.410.680.680.68200.60.60.940.940.94250.730.731.121.121.12321.191.191.861.861.86401.381.382.122.122.12501.511.512.772.772.77651.851.853.313.313.46802.942.943.593.594.311003.413.414.574.576.291254.534.535.655.658.51505.145.147.617.6110.
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