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Welding class description Techn. Spec.: welding class/welding quality 001/ Page 1 of 11 - Rev.00 DME WELDING CLASS FOR WELDED STRUCTURE 焊接結構件的焊接等級 Here below the reference drawing to explain welding class 以下圖為例解釋焊接等級 : Detail: “A” 細節: “A” 細節: “B” Detail: “B” Detail: “A” 細節:“A”對接焊縫:全熔透 Butt weld: complete penetration 角焊縫:部分熔透 Fillet weld: partial penetration 對接焊縫:全熔透 Butt weld: complete pene