What is Electric Fusion Welding (EFW) and Electric Resistance Welding (ERW)? Electric fusion welding (EFW)is the combination of metal and metal by heating one or several consumable electrodes and the workpiece. Resistance welding is a welding process that uses a strong current to pass through the contact point between the electrode and the workpiece to generate heat from t ...
lvy lee - Permanent Steel Manufacturing Co.,Ltd
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