Twisted Tungsten Wires Grade W1, W2.1, WAl1, W-61 Purity 99.95$ ~ 99.98% ISO 9001:2000, SGS Twisted Tungsten WiresPurity 99.95 ~ 99.98% Diameter: 0.1 ~ 3.0 mmGrade: W1, W2.1, WAL1,W-61MOQ:1KG Certificate: ISO 9001:2000, SGSAvaiable:30 MT/MApplication: tungsten bar is used as heater for high-temperature furnace , heating electrodes in rare eath industry , emission cathode , high-temperature ...