Good day to all...
we had used the consumables (ER70S-2)/OK TIG ROD 12.62, size: 2.4mm dia for our production weld joints (pipe materials: carbon steel ASTM A106 Gr.B; size: 3 inch; Sch 40). Further to inform you that we had checked the hardness of base material, HAZ and on weld metal before &...