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 Size Quartz Furnace Tube - High-Purity Suppliers and Factory in China for Laboratory & Industrial Use Manufacturers, Products

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High-Quality Custom Size Quartz Furnace Tube - High-Purity Suppliers and Factory in China for Laboratory & Industrial Use Manufacturers, Products

Quartz furnace tubes are essential components manufactured from high-purity quartz sand (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

1 What shapes are available for the quartz tubes?

The quartz tubes are available in straight tube, U-shaped tube, and spiral tube configurations. Custom special structures can also be manufactured according to specific project requirements.

2 What are the standard size ranges for the quartz tubes?

The outer diameter ranges from 10mm to 500mm, with a wall thickness of 1mm to 20mm and lengths from 100mm to 6000mm. All dimensions can be customized based on customer-supplied drawings.

3 Is a vacuum-sealed design available?

Yes. Vacuum-sealed designs are supported. Other connection and end options include flange connection, closed end, and quartz flange, making the tubes suitable for a wide range of laboratory and industrial applications.

4 What surface treatment options are offered?

Three surface treatment options are available: polished (applicable to both inner and outer surfaces), frosted, and acid-etched. The choice depends on the optical, chemical, or mechanical requirements of your application.

5 Can the quartz tubes be customized to match our drawings?

Absolutely. All dimensions — including outer diameter, wall thickness, and length — are manufactured to customer drawings. Special structural forms beyond the standard shapes are also accepted upon request.

6 What connection types are compatible with the quartz tubes?

The quartz tubes support flange connections and quartz flange fittings, as well as closed-end configurations. These options ensure compatibility with a variety of systems, including high-temperature furnaces, semiconductor processing equipment, and chemical reactors.

High-Quality Custom Size Quartz Furnace Tube - High-Purity Suppliers and Factory in China for Laboratory & Industrial Use Manufacturers, Products

Product Description

Product Specifications

Frequently Asked Questions

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