... well, high precision, good quality.Product:quartz sleeve, borosilicate glass tubing, glass tube,borosilicate tube, quartz light tube, quartz sleeve for water purification ... produce the tubes within a very large diameter rang: OD 3-80mm, thickness 0.6 – 2.0mm , length 800- 2400mm. ... point Strain point (°C) 1140 Young's Modulus: (Pa) 7.3 × 105 Application: The product is widely used: halogen lamps, ...