... -2C Long hand Cold Welding machine Fundamentals of Welding:one kind that without any ... member atomic structure connection principle, thus welding varieties of non-ferrous metal material . Model Long hand ... Widely used in the cold welding for the wire of copper, aluminum, gold, silver, nickel, Platinum, ... Aluminium: ф0.30mm-ф1.50mm Structure Made of aluminium alloy,lightly and durable Advantage No power ...