... the draft 3. Good price. Sealing Quartz TubeOur company also do quartz glass tubes deep-processing. There is cutting, ... sealing, one is sealing the end of the tubes round, and the other is flat.No matter ... 3-300mm clear quartz tube, UV-stop quartz tube, red quartz tube, processed quartz tube, quartz rod, quartz plate, gray quartz tube, and so ... good service from us. Further Processing of quartz tubes