What information do you need to engineer a custom quartz tube or component?

Please send outer and inner diameter (or wall thickness), length, required tolerances, end configuration (open, closed, flanged, ground joint or welded fittings), material grade (transparent or opaque fused quartz), working temperature and atmosphere, annual or batch quantity, and a drawing in PDF, DWG or STEP format. Complete data lets our engineers confirm manufacturability and lead time in a single review.

What is the maximum operating temperature of fused quartz?

Transparent fused quartz typically supports continuous service around 1,100 °C and short exposures up to roughly 1,250 °C, with a softening point near 1,683 °C. Real limits depend on grade, load, atmosphere and cycle time. Above about 1,100 °C, surface contamination such as alkali residue from skin contact accelerates devitrification, so quartzware should be cleaned and handled with clean gloves before firing.

How does Southeast Quartz verify quality before shipment?

Products undergo helium mass-spectrometry leak detection, pressure resistance testing and purity testing before leaving the factory, together with dimensional inspection against the customer drawing, to ensure stable performance with no impurities and no leakage.

Can you manufacture oversized quartz tubes and non-standard quartz shapes?

Yes. Our workshop combines flame hot-working with CNC cold machining, so we produce oversized fused quartz tubes, bell jars, slotted quartz boats, flanged reactors, irregular shaped quartz sheets and fully customized quartz instruments according to customer equipment parameters.

Where is Southeast Quartz located and which markets do you export to?

Our factory is at No. 1 Qingsheng Rd., Qinghu Industrial Park, Donghai County, Jiangsu, China, within China's best-known crystal and quartz industrial cluster. Besides customers throughout China, we export to Europe, the Americas, Southeast Asia and the Middle East.

High-Quality Custom Quartz Furnace Tubes from China Suppliers | High-Purity Quartz Factory for Laboratory & Industrial Use Suppliers, Product

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High-Quality Custom Quartz Furnace Tubes from China Suppliers | High-Purity Quartz Factory for Laboratory & Industrial Use Suppliers, Product

Discover high-quality quartz furnace tubes produced in China by leading suppliers. Our quartz furnace tubes are crafted from high-purity quartz sand, ensuring exceptional resistance to high temperatures (up to 1200℃ or more), along with superior thermal stability and strong chemical inertness. These tubes are essential components in various high-temperature heat treatments, particularly in industries such as semiconductors, photovoltaics, and new materials. They play a crucial role in vacuum furnaces and diffusion furnaces, which are key to advanced thermal processing.

As a vital element of semiconductor and photovoltaic thermal processing equipment, our quartz furnace tubes, made from high-purity silicon dioxide (SiO₂), serve as the reaction chamber in high-temperature environments like diffusion and oxidation furnaces. They facilitate a controlled atmosphere for wafer processing at elevated temperatures.

Material: High-purity synthetic fused silica (SiO₂ ≥ 99.99%), with low hydroxyl (OH) content (

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Product Description

📋 Product Specifications

🔷 Shapes	Straight tube, U-shaped tube, spiral tube, and customized special structures.
📐 Sizes	Outer diameter 10mm–500mm, wall thickness 1mm–20mm, length 100mm–6000mm (per customer drawings).
⚙️ Features	Flange connection, closed end, quartz flange, and vacuum-sealed design available.
✨ Surface Treatment	Polished (inner/outer), frosted, or acid-etched surface.

❓ Frequently Asked Questions

Q1: What shapes are available for the quartz tubes?

We offer straight tubes, U-shaped tubes, spiral tubes, and fully customized special structures based on your specific application requirements.

Q2: What size range do you support for custom orders?

We support outer diameters from 10mm to 500mm, wall thicknesses from 1mm to 20mm, and lengths from 100mm to 6000mm. All dimensions can be manufactured according to customer-provided drawings.

Q3: Is a vacuum-sealed design available?

Yes. Vacuum-sealed designs are available, along with flange connection, closed-end, and quartz flange options to meet various industrial and laboratory needs.

Q4: What surface treatment options are offered?

We provide polished surfaces (both inner and outer), frosted finishes, and acid-etched surfaces. The choice depends on your optical, chemical, or mechanical requirements.

Q5: Can I submit my own drawings for a custom quartz tube?

Absolutely. We accept customer-provided drawings and specifications to manufacture quartz tubes in non-standard shapes, sizes, and configurations tailored to your project.

Q6: What connection types are supported for the tube ends?

The tubes can be configured with flange connections, closed ends, or quartz flanges. These options ensure compatibility with a wide range of equipment and sealing systems.

High-Quality Custom Quartz Furnace Tubes from China Suppliers | High-Purity Quartz Factory for Laboratory & Industrial Use Suppliers, Product

Product Description

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