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.

Custom High Purity Quartz Rods & Fused Silica Rods - China Factory & Suppliers for Semiconductors & Laboratory Manufacturer, Manufacturers

1 / 3

Custom High Purity Quartz Rods & Fused Silica Rods - China Factory & Suppliers for Semiconductors & Laboratory Manufacturer, Manufacturers

Our high-performance quartz rods, manufactured in China, are made from fused silica (SiO₂ ≥ 99.99%). These cylindrical products exhibit exceptional high-temperature resistance, with a softening point of approximately 1730°C and the capability for long-term use at temperatures up to 1100°C. They are renowned for their excellent UV-IR transmittance, low thermal expansion, and remarkable chemical inertness, being resistant to most acids except HF. Additionally, quartz rods provide outstanding electrical insulation properties. As leading suppliers and a dedicated factory in China, we cater to various industries, including optics, semiconductors, lasers, lab instruments, and high-temperature applications, making our quartz rods essential materials for precision and harsh-environment applications.

Our quartz rods are cylindrical components crafted from high-purity silicon dioxide (SiO₂). These products are produced by melting natural or synthetic quartz and forming them into solid rods through advanced drawing or molding techniques.

Quartz rods serve as fundamental semi-finished materials that can be further fabricated into tubes, supports, or optical components, reinforcing our position as top suppliers and manufacturers in the industry.

Send Inquiry

Product Description

Product Specifications

Product Details

Cross-sectional Dimensions	Tolerances	Standard Lengths
3 × 3	±0.1	100–1000
4 × 4	±0.1	100–1000
5 × 5	±0.1	100–1000
6 × 6	±0.15	100–1000
8 × 8	±0.15	100–1000
10 × 10	±0.2	100–1000
15 × 15	±0.2	100–500
20 × 20	±0.25	100–500

Frequently Asked Questions

What do the cross-sectional dimensions in the table refer to?

The cross-sectional dimensions (e.g., 3×3, 10×10) represent the width and height of the square cross-section in millimeters. These are the nominal dimensions used to identify and select the appropriate size for your application.

What do the tolerance values (e.g., ±0.1, ±0.25) mean?

Tolerances indicate the allowable deviation from the nominal cross-sectional dimension during manufacturing. For example, a ±0.1 mm tolerance means the actual dimension can be 0.1 mm larger or smaller than the stated size, ensuring consistent fit and function in precision applications.

Why do larger cross-sections have higher tolerance values?

As cross-sectional dimensions increase, achieving the same level of absolute precision becomes more challenging during the manufacturing process. Therefore, larger sizes such as 15×15 and 20×20 are assigned slightly wider tolerances (±0.2 and ±0.25 respectively) to maintain practical and cost-effective production standards.

Why are the standard lengths shorter for larger cross-sections (100–500 vs. 100–1000)?

Larger cross-section sizes (15×15 and 20×20) are offered in a shorter standard length range of 100–500 mm. This is typically due to material weight, handling considerations, and the specific application requirements for larger profiles, where longer lengths are less commonly needed.

Can custom lengths outside the standard range be ordered?

The table lists standard available lengths. For custom length requirements outside the specified ranges, it is recommended to contact the supplier or manufacturer directly to discuss custom cutting options, minimum order quantities, and lead times.

What units are used for the dimensions and lengths in this table?

All cross-sectional dimensions and tolerance values are expressed in millimeters (mm). The standard lengths are also given in millimeters (mm), ranging from 100 mm to 1000 mm depending on the profile size selected.

Custom High Purity Quartz Rods & Fused Silica Rods - China Factory & Suppliers for Semiconductors & Laboratory Manufacturer, Manufacturers

Product Description

Product Specifications

Related Products

Wholesale Premium High-Purity Quartz Boat for High-Temperature Processes - China Suppliers and Factory Factory, Products

Custom China Suppliers - Oversized Fused Quartz Tubes Factory for High-Temperature Applications Suppliers, Products

Wholesale Customized High-Purity Quartz Products from China Suppliers - Factory Direct for Semiconductor and Optical Applications Supplier, Products

Wholesale Custom Quartz Furnace Tube for Laboratory & Industrial Use | China Suppliers & Factory Direct Supplier, Factory

High-Quality High-Temperature Resistant Quartz Lamp Holder for Industrial Use - China Suppliers & Factory Manufacturer, Manufacturers

Wholesale Premium High-Temperature Quartz Boats from China Suppliers - Fused Silica Factory for Semiconductor Processes Product, Products

Wholesale High-Quality Oversized Fused Quartz Tubes from China Suppliers | Factory for High-Temperature Applications Manufacturers, Supplier

High-Quality High Purity Quartz Rod / Fused Silica Rod for Semiconductor & Laboratory | China Suppliers & Factory Supplier, Factories

Wholesale China Suppliers of Fused Silica Quartz Plates - High Temperature Resistant Quartz Glass Factory Manufacturer, Product

High-Quality Customized High-Purity Quartz Products from China Suppliers - Reliable Quartz Factory for Electronics and Research Manufacturers, Supplier