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 Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.
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.
What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.
All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.
Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.