... lamps, etc.We can produce the tubes within a very large diameter rang: OD 3-400mm, thickness wall 0.7 – 10 ... ,7th building,Xinyun block,Xinxiang City,Henan provinceProduct ImageProduction precess large size quartz glass tube 1.dimension tolerance Range of ODODWTSidingOut ... )1670Annealning point(°C)1210Strain point(°C)1110Youngs Modulus7.3×105 large size quartz glass tube