WCE20, WLA15, WLA20,WTL20,W1,RED Tu,Green,Tu Technical Specifications of Tungsten ElectrodesItem-No.Type of ProductsTip-ColourOxide.Composition %ÆLength /HeightWPPure TungstengreenW 99.951mm-50 mm175 or 150 or 75 mm WT20Thoriated TungstenredTho2 1.72.21mm-10 mm 3Thoriated TungstenblueTho2 0.250.551mm-10 mm 4Thoriated TungstenyellowTho2 0.81.21mm-10 mm 5Thoriated TungstenpurpleTho2 2.03.21mm-10 mm ...