... This large quartz tube is widely used in the silicon furnace and PV field. we can make the size upon your request ... :1.high quality competitive price and elegant appearance2.high temperature resistence and corrosion resisting3.no bubble and no processing trade4.long time ... Ends closing, sand blasting, polishing, bending, cutting, pinching, burning mouth and so on The special one, pls kindly send me the ...