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Heavy Wall Quartz Sleeves

Heavy Wall Quartz Sleeves

-- Steady & Reliable Manufacturer --

Introduction

Heavy Wall Quartz Sleeves are robust, thicker-than-standard quartz tubes specifically engineered for demanding applications that require enhanced mechanical strength, pressure resistance, and superior physical durability. Unlike thin-walled quartz tubing primarily used for internal processes, these heavy wall sleeves are commonly employed as protective jackets for sensitive components, such as UV sterilization lamps, heating probes, thermocouples, or in industrial processes involving high differential pressures. The increased wall thickness significantly boosts the sleeve's resistance to external impacts, sudden pressure changes, and aggressive flow rates of liquids or gases. Yancheng Mingyang Quartz Products Co., Ltd. uses high-quality raw material and precision drawing techniques to ensure both the purity of the quartz (≥99.99% SiO2​) and the uniformity of the wall thickness, which is paramount for predictable pressure rating and thermal stress distribution.

Our expertise as a quartz tube manufacturer allows us to produce these sleeves with exceptional dimensional consistency, which is vital for proper sealing when integrated into water purification systems or chemical reactors. The low thermal expansion of the fused quartz material, even in a heavy wall configuration, ensures that the sleeve maintains its integrity and dimensional stability across a wide temperature range, minimizing the risk of failure during process start-up or shutdown. Furthermore, the inherent chemical inertness of quartz means these sleeves can reliably protect internal elements from highly corrosive fluids—such as ozone-rich water, strong acids, or concentrated saline solutions—without undergoing degradation or contaminating the surrounding medium. This makes them indispensable in environmental, industrial, and medical sectors where both component protection and process purity are required. We offer various end finishes, including fire-polished ends, precision-ground ends for sealing, and custom drilling or slotting for mounting purposes, tailored exactly to the client's integration needs.

For buyers concerned with longevity and safety in critical infrastructure (like high-pressure water treatment plants), choosing a Heavy Wall Quartz Sleeve ensures a substantial safety margin and extended operational life compared to standard-wall options. We manufacture these sleeves to exceed industry standards, providing the highest reliability.

Specification Parameters

ParameterDetails
Material TypeDrawn Fused Quartz Glass (Clear or Opaque options)
Outer Diameter (OD) Range15 mm to 150 mm (Larger sizes available on request)
Wall Thickness (WT) Range3 mm to 10 mm (Heavy Wall defined as WT/OD>0.15)
Dimensional Tolerance (OD/ID)Precision Ground ±0.05 mm on sealing surfaces
Pressure RatingSignificantly increased pressure resistance compared to standard wall (Rating depends on ID/OD ratio)
UV Transmission GradeOzone-Free or Ozone-Generating (Doped) for UV lamp protection
Max Operating Temperature1050∘C (Continuous use)
End Finish OptionsFire Polished, Ground, Flanged, or Sealed/Domed End

The critical technical detail for heavy wall quartz sleeves is the ratio of wall thickness to outer diameter (WT/OD), which is directly linked to the maximum internal or external pressure the sleeve can safely withstand. We classify a sleeve as "heavy wall" when this ratio is substantially higher than standard tubing, often exceeding 0.15. Our production process ensures the wall thickness is extremely uniform (±5% tolerance), eliminating weak points that could lead to catastrophic failure under pressure or thermal stress. The material purity (≥99.99% SiO2​) is maintained, guaranteeing excellent UV transmission properties—essential when used to protect UV-C sterilization lamps in water treatment plants. For these applications, we offer both Ozone-Free (doped TiO2​) and Ozone-Generating (high UV transmission) quartz grades. The precision grinding capability allows us to achieve very tight tolerances on the OD and length, crucial for forming reliable, high-pressure seals with O-rings and mounting hardware. We provide a calculated pressure rating specific to the client’s ID and WT combination, based on ASME or proprietary stress analysis models, offering peace of mind regarding operational safety. Furthermore, we can manufacture these sleeves in complex cross-sectional shapes (e.g., elliptical or rectangular) using advanced forming techniques to fit specialized equipment profiles, maintaining the heavy wall integrity throughout.

Applications

  • High-Pressure Water Purification: Encasing UV germicidal lamps in municipal or industrial water treatment facilities, where the sleeve must withstand the system's operating pressure (e.g., 10 bar or higher).

  • Industrial Flow Systems: Used as robust sight glasses or viewing ports in pipes and vessels handling corrosive chemicals or high-temperature fluids under pressure, where conventional glass would fail.

  • Thermal Protection for Sensors: Providing a mechanically resilient, chemically inert sheath for thermocouples, RTDs, and other sensitive temperature or chemical sensors operating in furnaces or harsh chemical baths.

  • Specialized Heating Elements: Serving as the outer protective jacket for high-watt density heating rods in industrial boilers or immersion heaters, protecting the element from mechanical damage and corrosion.

  • Ozone Generation Equipment: Used as dielectric barriers and reaction chambers in high-efficiency ozone generators, benefiting from quartz's high dielectric strength and chemical resistance.

  • High-Temperature Furnaces (External Use): Protecting external wiring, probes, and cooling lines from the extreme heat radiating from the furnace core, often acting as a highly durable heat shield.

In water purification, the sleeve is the final barrier between the pressurized water and the UV lamp's electrical components. Failure of this component can lead to costly system shutdown and damage. Our heavy wall design inherently provides a longer mean time between failure (MTBF). Furthermore, the low friction surface finish of the quartz minimizes biofouling and scale buildup, particularly important in water systems, maintaining high UV transmission efficiency over time and reducing maintenance frequency. We are expert in manufacturing sleeves with precise end-seals (such as double-domed ends) required for specific UV lamp designs, ensuring compatibility across a wide range of OEM equipment models. This specialization in both material property and end-use configuration makes us a preferred supplier for system integrators and maintenance providers globally.

Advantages

  • High Pressure and Mechanical Strength: The increased wall thickness provides significantly greater resistance to internal or external pressure spikes and enhances robustness against physical impact and fluid-borne debris.

  • Superior Chemical Barrier: Shields sensitive internal components (like electrical wiring or filaments) from highly corrosive water, ozone, H2​O2​, or aggressive chemical vapors, extending component lifespan.

  • Stable UV Transmission: Maintained high UV-C transparency (or filtering for ozone-free requirements) is guaranteed due to the pure quartz material, ensuring maximum germicidal efficacy in water treatment applications.

  • Excellent Thermal Shock Resistance (Low CTE): Even with thicker walls, quartz's low coefficient of thermal expansion ensures the sleeve can tolerate rapid heating/cooling cycles without cracking, unlike conventional glass.

  • Reduced Biofouling and Scaling: The ultra-smooth, non-porous surface of fused quartz minimizes the adhesion of biological films and mineral deposits, ensuring cleaner operation and consistent optical performance.

  • Custom End Finishing Capability: We offer complex sealing geometries (ground, polished, flanged, or double-domed) that ensure reliable, leak-free integration with client O-ring grooves and sealing glands.

The true value of our Heavy Wall Sleeves is realized in reduced operational risk and lower lifetime maintenance costs in critical infrastructure. While the initial component cost may be higher than thin-wall alternatives, the enhanced durability and prolonged service interval of the heavy wall version offer a substantial ROI over time, especially in high-flow, high-pressure UV disinfection systems. Our vertical integration, from raw material to finished product, allows us to certify the dimensional accuracy and purity required for these safety-critical components, providing a quality guarantee that batch resellers cannot match.

Payment and Shipping

We facilitate smooth international procurement for large industrial components. Payment can be made via T/T (with standard 30% down, 70% balance prior to shipping) or irrevocable L/C at sight, especially for large project orders. We also accept payments via secure bank drafts and specialized trade insurance platforms.

Shipping Protocol: Every heavy wall sleeve is individually protected to maintain structural integrity despite its robust design.

  • Custom Support and Separation: Sleeves are nested within specialized, high-density foam or plastic carriers that separate them to prevent abrasion and impact. Long sleeves are supported along their entire length.

  • Crating: They are packed into IPPC-certified, heavy-duty wooden boxes or crates, designed for stacking and resistant to weather and handling stresses during sea or air transport.

  • Freight Terms: We offer flexible shipping arrangements including EXW, FOB, and CIF, and work with reputable global freight forwarders to ensure timely and documented delivery to ports worldwide. Air freight is recommended for sleeves with highly precision-ground ends to minimize environmental exposure during transit.

Standard lead time is 15−25 working days, depending on the complexity of the end-finish (e.g., flanging or sealing). We provide real-time tracking and comprehensive customs documentation to expedite delivery to your final destination.

Frequently Asked Questions (FAQ)

  • Q: How do I calculate the maximum pressure rating for a Heavy Wall Quartz Sleeve?

  • A: The maximum safe working pressure is a function of the sleeve's outer diameter, wall thickness, and the presence of any surface imperfections. We provide an estimated safe working pressure based on standard engineering formulas for thick-walled cylinders, but final pressure rating should always be confirmed by the end-user under operating conditions. We guarantee the dimensional accuracy that supports the calculation.

  • Q: What is the benefit of using Ozone-Free quartz for UV lamp protection?

  • A: Ozone-Free quartz (which contains Titanium doping) blocks UV radiation below 220 nm. This prevents the 185 nm wavelength light from converting oxygen (O2​) into ozone (O3​) in the surrounding air or fluid. This is necessary for applications where ozone is undesirable or toxic, such as UV disinfection in confined spaces or food processing areas.

  • Q: Can the sleeves be manufactured with a closed (domed) end?

  • A: Yes, we specialize in high-quality quartz glassblowing and fusion techniques to produce completely sealed, single-ended sleeves with precision-formed domed or flat ends, often required for immersion heater sheaths or thermocouple protection.

  • Q: Does the heavy wall thickness diminish UV light transmission significantly?

  • A: While thickness does slightly increase absorption, high-purity fused quartz has excellent intrinsic transparency. The efficiency loss from the extra thickness is minimal (typically <5%) and is greatly outweighed by the benefit of the enhanced mechanical strength and pressure resistance in demanding industrial environments.

From Made-in-China to
Global Smart Manufacturing

Yancheng Mingyang Quartz Products Co., Ltd. is a company specializing in the production of quartz and special glass products. Yancheng Mingyang Quartz Products Co., Ltd. is the production plant of Jinzhou Mingde Quartz Glass Co., Ltd. in Jiangsu, Since its establishment, the company has developed rapidly, introduced advanced technology and production equipment at home and abroad, and continuously improved and improved product quality. Relying on its own advantages, we have developed a variety of products suitable for the market and meet the needs of different customers, and solved many urgent production problems for our customers.

The company's products include quartz glass tubes, double-hole quartz glass tubes, quartz glass rods, quartz sheets, sapphire windows, calcium fluoride glass windows, infrared ultraviolet coatings, high-pressure resistant aluminosilicate glass window panels, quartz glass instruments, high borosilicate glass instruments, quartz crucibles, quartz gold-plated tubes, quartz heaters, quartz infrared heating tubes, far-infrared directional radiation heaters ultraviolet germicidal lamps and other special types of quartz glass products.

Yancheng Mingyang Quartz Products Co., Ltd.
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