This is clear fused quartz glass tube available as continuous machine drawn and automatic controlled tubing . This glass has the typical characteriastics of high purity , good spectral transmission, well controlled dimension and lower OH and so on . It serves as the first choice of heat resistant material for halogen lamps , mercury lamps , metal halide lamps and other quartz lamps.

This glass can be supplied in the range of 3-80mm outside diameter, 0. 6-2. 0mm wall thickness and 1200-1500mm length. Exhaust tube with good CPK are suiable for highspeed streamline production . And further processing of trim cutting , fire polishing , bending and pinchingcan be done according to the requirement of cusomers . OH-content can be controlled within 20ppm/15ppm/10ppm/5ppm/2ppm according to the requirement of customers. The detailed dimensional tolerance and technical data can be found in table I, table II, table III, tableIV, tableV.