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船用搭焊、對焊、銅管折邊松套異徑鋼法蘭

Lap Welding. Balanced welding. Copper pipe flanging free Flared steel flange for marine
標準號:CB/T 3212-1999
Lap Welding. Balanced welding. Copper pipe flanging free Flared steel flange for marine
標準號:CB/T 3212-1999