quartz tube quartz tube material: High purity Crystal powder quartz tube size: 8mm-18mm Used for heating . Further Process Quartz Products cutting, washing, drilling, sandblasting, thermal bending, sealing, polishing, melting connecting ,spiraling ,edge grinding, beveling edge, annealing , Can be processed according to drawings. Chemical composition unit : ppm AlFeKNaLiCaMgCuMnPbBCrOH251.52.52.50 ...