
En 12071 Welding Consumables - Tubular Cored Electrodes For Gas Shielded Metal Arc Welding Of Creep Resisting Steels - Classification
出版:British Standards Institution

专家解读视频
En 12071 Welding Consumables - Tubular Cored Electrodes For Gas Shielded Metal Arc Welding Of Creep Resisting Steels - Classification
出版:British Standards Institution
专家解读视频