Alfa 70S2 Filler Wire Alfa 70S2 filler wire is a premium, triple deoxidized wire designed for welding various carbon steel materials, including pipe welding, pressure vessels, and boilers.Alfa 70S2 is commonly used for high-quality pipe welding, especially on mild and medium tensile steels. SIZE: 1.6mm,2mm,2.4mm,3.2mm
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