最終更新日：2022/12/24
One hundred per cent penetration can be obtained by welding in a slight vertical weld uphand on metal up to eight gages.
編集履歴（0）
One hundred per cent penetration can be obtained by welding in a slight vertical weld uphand on metal up to eight gages.
DiQt（ディクト）
無料
★★★★★★★★★★
