1.Copper,CuCrZr ,CuAg 2.Good quality and reliability. 3.Maintain hardness at ... DescriptionWelding contact tip, supply the style for Binzel, Tweco, Bernard, Esab, Panasonic, OTC, Kemppi, Tregaskiss, Fronius etc.Welding contact tip, material ... *30Tweco type: 11-, 14-, 14H-, 15HFC-, 15H-,14T-, 11T-, 13-...Esab type: M6*27, M8*37, M6*30, M6*40Tregaskiss type ...