... low hydrogen and low dus good quality Tungsten Carbide electrode Tungsten Carbide electrode surrounded in a mixed type ... Diameter: 1.0mm-20mm(+/-0.05)2>Composition: tungsten>=99.95%3>Length: 75mm,150mm,175mm,178mm4> ... WT30, WT40, WC20, WZr3, WZr8, WL10, WL15, WL20Specification Designation Composition Color Mark Standards Dioxide Dioxide in % Impurities % Tungsten% WP ------------- -------------- ...