standard quartz tube, OH content : <2ppm ,5ppm, 8ppm 10ppm It is widely applied for halogen lamp, mercury lamp, single-ended lamp, automobile lamp, stage lamp, thermocouple, printer lamp, sleeve for water treatment lamp, quartz utensils and pipes, etc. Range of ODODWTSidingEllipsticityCamber/1220mm≤5mm±2.0%±10%12%2.0%2.5mm6.00-15.00mm±1.25%±8%10%1.5%2.5mm15.00-20.00mm±1.25%±10%15%1.5%2.5mm20.00- ...