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By certification 
Characteristics：
( 1 ) Suitable for multi-layer welding.
( 2 ) Welding bead appearance is smooth and beautiful, welding slag stripping is good.，Operational superiority.
( 3 ) Suitable for butt welding and fillet welding in shipbuilding, machine building, steel bridge.
( 1 ) Suitable for multi-layer welding.
( 2 ) Welding bead appearance is smooth and beautiful, welding slag stripping is good.，Operational superiority.
( 3 ) Suitable for butt welding and fillet welding in shipbuilding, machine building, steel bridge.
