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PRODUCT PARAMETERS
Description
Overview of Tube Furnace
A tube furnace is a type of laboratory equipment used for high-temperature applications, featuring a cylindrical heating chamber designed to heat samples uniformly along its length. Commonly used in material processing, chemical analysis, and semiconductor manufacturing, it supports processes like annealing, sintering, and calcination.
Features of Tube Furnace
Uniform Heating: Ensures even temperature distribution throughout the sample.
Cylindrical Design: Facilitates consistent heating by minimizing hot spots.
Temperature Range: Capable of achieving high temperatures suitable for various processes.
Programmable Controls: Allows for precise control over heating cycles and profiles.
Gas Flow Control: Supports controlled atmosphere environments for specific reactions.
Compact and Efficient: Designed for efficient operation with minimal footprint.

Specification of 400mm large diameter quartz tube one end closed spiral quartz tube long quartz tube coil for furnace
400mm Huge Size Quartz Tube– One End Shut Spiral Layout
Premium High Quality for High-Temperature Applications
This quartz tube includes a 400mm outer size and is available in a long, spiral coil form with one end permanently sealed. It is made from high-purity merged quartz, which provides exceptional thermal security and resistance to thermal shock. The material can hold up against constant operating temperatures up to 1100 ° C and short-term direct exposure beyond 1200 ° C.
One-end closure ensures a protected, leak-tight chamber suitable for controlled environment processes. The spiral form enables compact installment while maintaining consistent warm distribution along the coil. This design is particularly useful in industrial heaters, semiconductor processing, and lab study arrangements where space efficiency and uniform heating are important.
The tube’s huge size supports higher sample or gas flow quantities compared to standard quartz tubes. Its smooth internal surface minimizes particle buildup and makes cleaning simpler. Each system undertakes strict quality control to assure dimensional accuracy, wall density consistency, and optical clearness.
Secret advantages consist of:
– Exceptional purity (≥ 99.99% SiO TWO).
– Low thermal development coefficient.
– High resistance to chemical rust.
– Exceptional electrical insulation residential properties.
These tubes are compatible with most high-temperature heating system systems. They work well under vacuum cleaner or inert gas settings. Custom-made lengths and coil pitches are readily available upon demand to match particular devices requirements.
Made using innovative fusion techniques, this quartz tube provides reliable efficiency sought after thermal applications. Its robust building and construction lowers the threat of splitting or contortion during rapid heating or cooling cycles. Individuals can count on constant results over extensive life span.

Applications of 400mm large diameter quartz tube one end closed spiral quartz tube long quartz tube coil for furnace
Applications of 400mm Big Size Quartz Tube
One-End Closed Spiral Style for High-Temperature Furnaces
The 400mm large size quartz tube with one end closed and developed right into a spiral coil is constructed for demanding thermal processes. Its broad birthed allows sufficient space for materials or elements throughout warmth treatment. The shut end maintains contaminants out and keeps a controlled interior environment.
This sort of quartz tube works well in high-temperature heaters made use of in semiconductor manufacturing, solar battery manufacturing, and progressed materials study. Because quartz can deal with temperature levels over 1100 ° C without flawing, it stays stable also under extreme thermal anxiety. The spiral form enhances surface call and enhances warm circulation around the sample or reaction zone.
Why choose this style?
The one-end closure streamlines loading and sealing. You do not require extra fittings or caps. The coil layout fits nicely inside round heating system chambers, saving space while making certain uniform heating. Quartz also resists most acids and does not respond with numerous procedure gases, which aids keep your outcomes clean and repeatable.
These tubes prevail in diffusion, oxidation, and annealing actions where purity matters. Any type of trace metal or contamination could ruin a batch, so high-purity fused quartz is necessary. The 400mm size supports larger wafers, ingots, or experimental setups that smaller sized tubes can not hold.
Suppliers count on this quartz tube for consistent performance over futures. It takes care of rapid heating and cooling much better than lots of ceramics. Thermal shock hardly ever creates splits if dealt with effectively. Normal usage in laboratory and commercial setups verifies its reliability.
When you require a robust, pure, and thermally secure chamber for high-heat work, this large-diameter spiral quartz tube delivers. It satisfies strict process demands without including intricacy.
Company Introduction
Welcome to Designerstudiostore, your premier source for high-quality industrial furnaces designed to meet the stringent demands of modern manufacturing. Our extensive range includes electric, gas, and oil-fired furnaces tailored for various applications such as heat treatment, forging, and laboratory use. With cutting-edge technology and innovative designs, we ensure energy efficiency and superior performance in every product. At Designerstudiostore, we prioritize customer satisfaction by offering customized solutions, reliable after-sales support, and seamless global delivery options. Explore our catalog and discover why businesses worldwide trust us for their heating needs.
If you have any questions, please feel free to contact us(nanotrun@yahoo.com).
Payment Methods
T/T, Western Union, Paypal, Credit Card etc.
Shipment Methods
By air, by sea, by express, as customers request.

5 FAQs of 400mm large diameter quartz tube one end closed spiral quartz tube long quartz tube coil for furnace
Frequently Asked Questions: 400mm Large Diameter Quartz Tube (One End Closed, Spiral/Coil Design)
What is this quartz tube used for?
This quartz tube works inside high-temperature furnaces. Its large 400mm diameter and spiral shape help heat spread evenly. The closed end keeps materials inside during processing. People use it in labs and industries for crystal growth, annealing, and other thermal treatments.
Why choose a one-end-closed design?
The closed end acts like a container. It holds samples or materials without needing extra fixtures. This design reduces contamination risk and simplifies loading. It also helps maintain consistent atmosphere conditions during heating.
Is the spiral shape necessary?
Yes. The coil shape increases surface area and improves heat distribution. It also fits better in certain furnace setups where space is limited. Compared to straight tubes, the spiral design supports more uniform temperature control along the material path.
What temperature can this tube handle?
Made from high-purity fused quartz, it can withstand temperatures up to 1100°C continuously. Short-term exposure may go higher, but always stay within safe limits based on your specific process and furnace type.
How do I install or handle this tube?
Handle with clean gloves to avoid oils or scratches. Place it gently into the furnace chamber. Make sure it sits level and secure. Avoid sudden temperature changes—always heat and cool slowly to prevent cracking. Check for any visible damage before each use.
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