5N Fused Silica Material
Ultra-low metal impurity supports silicon wafer, solar cell and clean heating processes where contamination control matters.
Hong Kong Felix Glass Co., Limited supplies custom fused silica quartz glass tubes made from 99.999% high purity SiO2 raw material for semiconductor diffusion furnaces, PV production lines, laboratory heating systems and optical equipment. Ultra-low metal impurity supports silicon wafer, solar cell and clean heating processes where contamination control matters. Continuous working temperature up to 1200 degrees C with strong thermal shock resistance during heating and cooling cycles. Cutting, end polishing, flange welding, side branches, stepped structures and sealed end caps are available for custom systems. From small R and D test tubes to large diameter furnace tubes, each quartz tube can be produced according to dimensional drawings, furnace chamber layout and cleaning requirements. OD range 100 mm to 600 mm for diffusion furnace, oxidation furnace and photovoltaic solar cell production lines. General specification tubes for high-temperature sintering, gas delivery, optical testing and prototype verification. Flame-polished ends, welded flanges, side branch tubes, stepped tubes and sealed caps for industrial heating assemblies.Custom High Purity Fused Silica Quartz Glass Tubes
5N Fused Silica Material
High Temperature Stability
Deep Processing Options
Main Types of Custom Quartz Glass Tubes
Large Diameter Furnace Quartz Tubes
Standard Clear Fused Silica Tubes
Deep Processed Quartz Tubes
Quartz glass tubes are selected where thermal stability, optical clarity, chemical resistance and clean process compatibility must work together inside production equipment. Core tubes for diffusion furnaces and thermal oxidation furnaces used in wafer process equipment. Quartz tubes for mono and polycrystalline solar cell diffusion processes and high-temperature PV equipment. High-temperature sintering, thermal cycling tests, UV transmission light tubes and corrosive gas delivery systems. High purity silica sand is melted and continuously drawn into quartz tube blanks. CNC fixed-length cutting and rotary flame polishing create clean, smooth end faces. High-temperature stress annealing and dust-free ultrasonic cleaning reduce strain and particles. Size tolerance, purity, thermal shock and surface defects are checked before sealed packing.Main Industrial Application Fields
Semiconductor Wafer Manufacturing
Photovoltaic Production Lines
Laboratory and Optical Equipment
Production and Inspection Workflow
Melting and Drawing
Cutting and Polishing
Annealing and Cleaning
Inspection and Packaging


FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.
Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.
A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.
All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.
Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.