Copper Welding Wire 1. Size: 0.025-2mm 2. Thermal Class: 130-220C 3. Standard: IEC, NEMA,GB 4.Standard:IEC,GB,NEMA,JIS ISO Centification Class 180 Polyesterimide enamelled Copper Welding Wire1.Specifications of copper welding wireDiameter:0.025-2.0mmStandard: IEC, NEMA,GBThermal Class: 130/155/180/220 centigradeCertification:SGS,UL Approved,iso9001,iso140012.Features of copper welding wirea) ...