Submerged Arc Welding Wires em12k 1.1.6mm-5.0mm 2 ... some low alloy steel welding, such as sheet, the boiler butt and Angle jointWeld metal chemical composition:(%) ... lest produce hole.3.Before welding must be clear on the workpiece rust, oil, water and impurity. ABOUT US ... honor award. Over half the century, Relying on quality products and satisfactory service ,the company has become a comprehensive ...