... excellent feature. U Bend Quartz Glass Tube for thermocouple,SamplersResucerial Quartz Ltd is manufacturer and exporter of different sizes ... different type Quartz tube and heating tube, and etc. for thermocouples,lamps, heater, semiconductor,optical,oven and etc. ... excellent feature. Melting point at 1730 degree, mainly apply for Thermocouples, samplers and high temperature parts. This products ...