≥99.99%
SiO₂ High Purity Standard
1100°C
Continuous Thermal Load
≤5 Hours
Direct Technical Response
100%
Shockproof Wooden Crate Safe Arrival
Direct Factory Catalog
Engineered Fused Quartz & Silica Tubes for Cambodian Industry
Precision dimension control, high-transmittance optical clarity, and extreme mechanical shock endurance ready for direct shipping to Phnom Penh, Sihanoukville, and national SEZs.
Translucent Quartz Glass Pipe Quartz Glass Sleeve Opaque Milky White Tube
Helical Clear Quartz Glass Coil Tube for Precision Heat Exchangers
High Temperature Transparent Quartz Cylinder Heavy Wall Tube
Frosted Quartz Plate & High-Purity Diffuser Window
Fused Transparent Quartz Tube with Precision Ground Edges
Infrared Quartz Rapid Heating Tube (Carbon Fiber / Halogen / Graphene)
Round Head Quartz Rod & Stirrer for Chemical Processing
Customizable High-Purity Fused Quartz Tube High-Temperature Furnace Core
Engineering Whitepaper
Physical, Thermal & Optical Properties of Fused Silica
Precision materials selection is essential to avoid premature devitrification, mechanical failure, or spectral attenuation in severe industrial operating environments.
Thermal & Mechanical Constants
| Property Parameter | Reference Metric | Operational Context |
|---|---|---|
| Chemical Purity | ≥ 99.99% SiO₂ | Ultra-low heavy metal and alkaline trace impurities |
| Apparent Density | 2.20 g/cm³ | Dense amorphous vitreous silica matrix |
| Thermal Softening Point | ≈ 1683 °C | Resists sagging under high atmospheric temperatures |
| Continuous Operating Temp | ≈ 1100 °C | Rated for round-the-clock furnace operation |
| Peak Short-Term Limit | ≈ 1450 °C | Maintains structure through transient thermal spikes |
| Coefficient of Thermal Expansion | 5.5 × 10⁻⁷ /°C (20–300°C) | Immune to shock from rapid water quenching |
| Mohs Hardness | 5.5 – 6.5 | Scratch-resistant industrial grade structural surface |
Optical Grade Selection Guide (JGS1 / JGS2 / JGS3)
| Optical Grade | Spectral Bandwidth | Recommended Applications |
|---|---|---|
| JGS1 (Synthetic Fused Silica) | 185 nm – 2500 nm | Deep-UV germicidal lamps, excimer laser optics, semiconductor photolithography sight windows |
| JGS2 (Fused Quartz) | 220 nm – 2500 nm | High-pressure mercury lamps, UV curing observation ports, standard chemical reactor viewports |
| JGS3 (Infrared Fused Quartz) | 260 nm – 3500 nm | Low-OH infrared radiators, carbon-fiber emitters, thermal imaging barriers, pyrometer protection |
| Translucent / Opaque Quartz | Broad Diffuse Attenuation | Infrared thermal muffles, ceramic kiln diffusers, multi-zone tubular furnace liners |
| Sapphire Windows (Al₂O₃) | 200 nm – 5000 nm | High-pressure optical cells, abrasive slurries, high-wear industrial sensor covers |
Local Industrial Deployment
Engineered Quartz Applications Across Cambodia's Industrial Sectors
As Cambodia accelerates its industrial diversification across Special Economic Zones (SEZs), fused silica serves as a critical structural component across several key local production disciplines.
Market Analysis & Sourcing Trends
Emerging Industrial Sourcing Trends in Cambodia
Understanding regional policy incentives, logistics shifts, and procurement strategies that are reshaping how industrial quartz is imported into Southeast Asia.
Direct Manufacturer Credibility
Why Global & Cambodian Engineers Partner with Nivra Quartz
Donghai County Nivra Quartz Products Co., Ltd. combines raw material sourcing advantages with modern CNC machining, flame-working, and strict export quality control.
Procurement FAQ
Frequently Asked Questions for Cambodian Buyers
Practical answers on import documentation, shock-resistant packaging, material selection, and custom order logistics for factories in Cambodia.
How are fragile quartz tubes protected during shipment to Cambodia?
To prevent transit damage across maritime and overland routes, every quartz tube is individually wrapped in dust-free film, cushioned with tailored EPE high-density shock-absorbing foam, and packed inside heavy-duty multi-wall corrugated cartons. For long tubes or high-volume orders headed to Sihanoukville or Phnom Penh, batches are secured inside reinforced, fumigation-free plywood crates equipped with internal structural dampeners to eliminate flex and vibration.
What is the key difference between JGS1, JGS2, and JGS3 fused quartz?
The primary distinction lies in raw material source, spectral transmittance, and hydroxyl (OH-) content. JGS1 is synthetic fused silica offering high transmittance across deep ultraviolet wavelengths (185–2500 nm), ideal for UV disinfection and photolithography. JGS2 is standard optical fused quartz suitable for UV-visible applications (220–2500 nm), commonly used in sight glasses and furnace inspection windows. JGS3 is an infrared-optimized grade virtually free of OH absorption bands (transmitting up to 3500 nm), engineered for infrared heaters, thermal radiators, and pyrometer protection.
What import documentation do you provide for Cambodian customs clearance?
We provide a full export documentation suite for every shipment entering Cambodia through Sihanoukville Port (PAS), Phnom Penh Port, or Phnom Penh International Airport (PNH). This includes Commercial Invoices, Packing Lists with detailed dimensional weight, Clean Bills of Lading / Airway Bills, Material Inspection Certificates, and the China-Cambodia Free Trade Agreement (CCFTA) / RCEP Certificate of Origin (Form E), which allows eligible Cambodian buyers to access preferential tariff exemptions.
Can you manufacture custom quartz tubes according to engineering drawings?
Yes. Over 70% of our production runs are OEM/ODM custom fabrications. We can manufacture quartz tubes with customized inner and outer diameters (OD from 1.5 mm up to 450 mm), specified wall thicknesses, ground or fire-polished ends, customized flanged couplings, threaded joints, gas injection ports, and spiral or helical profiles. Send your PDF, DWG, or STEP drawings to our engineering team for a feasibility assessment within 5 hours.
What continuous operating temperature can your clear quartz tubes handle?
Standard clear fused quartz tubes can be operated continuously at temperatures up to 1100 °C. For intermittent or short-duration thermal cycles, they can withstand up to 1450 °C without structural deformation. The material has a softening point of approximately 1683 °C. Due to an extremely low thermal expansion coefficient (5.5 × 10⁻⁷ /°C), a quartz tube heated to 1100 °C can be quenched in cold water without shattering.
What is the typical Minimum Order Quantity (MOQ) and production lead time?
To support pilot testing and maintenance needs, our MOQ for standard size quartz tubes, spiral tubes, and infrared lamps starts at 1 to 10 pieces. Small precision components or custom cut wafers typically start at 50 to 100 pieces. Standard tube sizes in stock can be packed and dispatched within 3 business days; custom machined parts typically require 7 to 12 production days prior to air or sea freight dispatch.
Direct Manufacturer Supply
Upgrade Your Industrial Quartz Infrastructure
Connect with our technical team in Donghai, Jiangsu. Whether you need standard replacement furnace tubes or custom-engineered quartz components for a Cambodian facility, we provide drawing reviews, material recommendations, and factory-direct pricing.