1,quartz glass rod 2 tight tolearance 3,Resistance 1100 degree 4, no ... .5-5.6Softening point(degree)1683Annealing point1215Defoamation Point1120About Lianyungang Suke Quartz Products Sales Co.,Ltd:We can supply more than 5 ... -300mm clear quartz tube(high purity,good heating resistance,low OH), UV-stop quartz tube, red quartz tube, processed quartz tube, quartz rod, quartz plate, gray quartz tube ...