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Solder resist type, weld the special-purpose equipment alternately., can weld wire (diameter 2.0~3.5mm) - details see: https://www.machineto.com/dh-25-portable-steel-thread-spot-welder-10142378

DH25-Spot welder

Solder resist type and weld the special-purpose equipment alternately. It can weld wire (diameter Φ2.0~Φ3.5mm) alternately. The spot welder is suitable for the steel net light sandwich panel produce line of craft and mend and weld of automatic production line. The bonding tool does not need water cooling. High in efficiency!

It uses SCR trigger system instead of AC contact point for cost saving. The max wire diameter is Φ3.5+Φ3.5. The solder joint is fix without annealing. The welding head no need for cooling water. Multi-range of welding current and dual-directional regulation of welding time to fit different kinds of wire diameter. The advanced design of circuit saves electricity. Also, it can be used for overlaying welding.