
BS EN ISO 3580. Welding consumables. Covered electrodes for manual metal arc welding of creep-resisting steels. Classification
出版:British Standards Institution

專家解讀視頻
BS EN ISO 3580. Welding consumables. Covered electrodes for manual metal arc welding of creep-resisting steels. Classification
出版:British Standards Institution
專家解讀視頻