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.

Wholesale Custom Size Quartz Furnace Tube for Laboratory & Industrial Use Suppliers, Product

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Wholesale Custom Size Quartz Furnace Tube for Laboratory & Industrial Use Suppliers, Product

Quartz furnace tubes are made from high-purity quartz sand. They are resistant to high temperatures (up to 1200℃ or higher), have good thermal stability and strong chemical inertness. They are widely used in high-temperature heat treatment in fields such as semiconductors, photovoltaics, and new materials, and are the core components of vacuum furnaces and diffusion furnaces.

A quartz furnace tube is a key component used in semiconductor and photovoltaic thermal processing equipment. It is made from high-purity silicon dioxide (SiO₂) and serves as the reaction chamber inside high-temperature furnaces such as diffusion and oxidation furnaces.

It provides a controlled environment for wafer processing at elevated temperatures.

Material: High-purity synthetic fused silica (SiO₂ ≥99.99%), low hydroxyl (OH) content (<50ppm)

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Product Description

Customization & Specifications

Key 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 custom shapes are available for production?

We supply straight tubes, U-shaped tubes, spiral tubes, and customized special structural configurations tailored to application needs.

Q2 What dimensional specifications can be manufactured?

Outer diameters range from 10mm to 500mm, wall thickness ranges from 1mm to 20mm, and lengths can be fabricated from 100mm up to 6000mm.

Q3 Can products be fabricated according to customer drawings?

Yes, dimensions, geometries, and technical details can be completely customized based on provided customer drawings and parameters.

Q4 What special design and connection options are supported?

Available features include flange connections, closed ends, integrated quartz flanges, and high-performance vacuum-sealed designs.

Q5 What surface finishing options are provided?

Surface treatments can be selected from inner/outer polished finishes, frosted finishes, or acid-etched surfaces.

Wholesale Custom Size Quartz Furnace Tube for Laboratory & Industrial Use Suppliers, Product

Product Description

Customization & Specifications

Key Specifications

Frequently Asked Questions

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