Explore factory-certified high-purity UV transparent fused silica, furnace tubes, custom wafer boats, and optical glass components engineered for extreme thermal, chemical, and photonic demands.
Understanding the synthetic fused silica matrix, optical deep-UV transmittance spectrum, and structural resilience under continuous high-temperature stress.
Unlike standard borosilicate or synthetic sodalime glass, UV-grade quartz glass features exceptionally low hydroxyl [OH-] and trace metal content (Fe < 0.2 ppm). This yields peak internal transmittance exceeding 90% at 254 nm and 185 nm wavelengths, making it quintessential for ozone-generating lamps, UV-C germicidal sterilization, and excimer laser optics.
With an extremely low linear coefficient of thermal expansion of approximately 5.5 × 10⁻⁷ /°C, UV quartz glass sustains dramatic thermal shock without fracture. Components withstand steady-state operating temperatures up to 1,100 °C and short-duration thermal excursions up to 1,250 °C, enabling direct water quenching from red heat without mechanical degradation.
Manufactured from ultra-pure natural quartz sands or chemical plasma fusion, our material features greater than 99.99% SiO₂ composition. It exhibits total chemical inertness against virtually all acids (except hydrofluoric and hot phosphoric acid), eliminating batch cross-contamination in semiconductor wafer dopant drives, etching bathtubs, and analytical photometers.
| Material Property | UV Grade Fused Silica (JGS1 / Suprasil Equivalent) | Optical Fused Quartz (JGS2) | Standard Clear Fused Quartz (JGS3 / General Industrial) |
|---|---|---|---|
| SiO₂ Purity Level | ≥ 99.999% (Synthetic) | ≥ 99.99% (Refined Crystal) | ≥ 99.98% (High-Purity Sand) |
| Spectral Range Transmittance | 185 nm – 2,500 nm (Deep UV to Near IR) | 220 nm – 2,500 nm (Standard UV to IR) | 260 nm – 3,500 nm (Near UV & IR) |
| Hydroxyl [OH⁻] Content | < 5 ppm (Dry Grade) or ~1200 ppm (Wet) | < 30 ppm | < 150 ppm |
| Annealing Point / Softening Point | 1,140 °C / 1,730 °C | 1,120 °C / 1,683 °C | 1,080 °C / 1,665 °C |
| Dielectric Constant (1 MHz) | 3.75 | 3.78 | 3.80 |
Lianyungang Southeast Quartz leverages the world-renowned Donghai quartz cluster, delivering vertical integration from high-grade raw crystal beneficiation to multi-axis CNC cold machining.
Direct supply contracts with domestic and imported high-purity silica mines allow constant buffer inventory of raw quartz ingots and tube stock, buffering buyers from global raw material crunches.
Our workshop seamlessly merges ultra-high-temperature oxy-hydrogen flame lathes (hot working) with 5-axis CNC ultrasonic milling, high-speed drilling, slotting, and laser slicing (cold processing).
Every critical sealed envelope is verified by in-house vacuum helium mass-spectrometer leak detectors (leak rate < 1×10⁻⁹ mbar·l/s), optical polariscopes, and laser dimensional profiling.
Factory-direct wholesale eliminates middle trading margins. Production efficiency, clustering economies, and proprietary tooling yield 30% to 50% cost reductions against Western quartz fabricators.
Comprehensive regulatory verification, localized engineering logistics, and certified materials built for multinational OEMs across the EU, North America, Japan, and Southeast Asia.
Every production batch is fully documented with ICP-OES and GD-MS raw analysis verifying zero restricted substances under RoHS 3 Directive (EU) 2015/863 and REACH SVHC criteria, ensuring clean passage through customs borders and smooth OEM factory audits.
Fragile optical plates and oversized quartz furnace tubes receive customized multi-layer suspension packaging: vacuum-sealed electrostatic PE bags, custom CNC-milled pearl cotton (EPE) nests, non-fumigation plywood crates, and multi-axis drop-shock indicators.
To eliminate cross-border engineering bottlenecks, our bilingual process engineering team conducts real-time video conferencing to inspect equipment drawings, tolerancing (GD&T), bevel specifications, and thermal coefficient pairing for quick sign-off.
How emergent microelectronics, clean energy, and optical disinfection sectors drive higher purity and structural demands on UV quartz components.
Next-generation sub-7nm photolithography and ALD/LPCVD furnace equipment demand zero bubble inclusion (DIN 3140 Class 0) and virtual non-existence of hydroxyl groups, eliminating wafer defection and parasitic absorption.
High-volume municipal water purification reactors deploy our oversized, heavy-wall UV quartz sleeves. High 254 nm solarization-resistance ensures years of steady germicidal dosage without clouding.
Transition to N-type high-efficiency solar cells drives huge demand for extended-diameter quartz diffusion tubes (OD > 400 mm) and precision high-density slotted quartz boats supporting high-throughput thermal cycles.
UV-grade laser windows, quartz micro-fluidic analytical flow cells, and medical spectroscopic prisms require double-sided optical polishing (surface figure λ/4 to λ/10, scratch-dig 20/10) for laser beam integrity.
Comprehensive engineering insights into fused silica selection, customization tolerances, and international export procedures.
Complete your supply procurement with our factory-direct oversized reactor tubes, optical window plates, plasma-fused ingots, and thermal insulation rings.
