... : tungsten>=99.95%3>Length: 75mm,150mm,175mm,178mm4> Item: WP, WT10, WT20, WT30, WT40, WC20, WZr3, WZr8, WL10, WL15, WL20Specification ... Designation Composition Color Mark Standards Dioxide Dioxide in % Impurities % Tungsten% WP ------------- -------------- ≤0.20 99.8 Green AWS A5.12 WT10 ThO2 ...