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Direct supply of certified fused silica tubular systems and specialized thermal apparatus designed to withstand aggressive Middle Eastern industrial environments.
As Iraq accelerates its multi-billion-dollar national industrial modernization initiative, high-temperature manufacturing and petrochemical infrastructure have become the cornerstones of economic renewal. From the mega-refining hubs in Basra, Baiji, and Karbala to expanding photovoltaic ventures and municipal ultraviolet water treatment projects along the Tigris and Euphrates rivers, standard borosilicate glass and metallic alloys are constantly failing due to aggressive oxidation, sulfur corrosion, and thermal shock.
This has created an unprecedented demand for custom large-diameter fused quartz tubes (OD 100mm to 650mm+). Fused silica glassware provides an extraordinary combination of an near-zero coefficient of thermal expansion ($5.5 \times 10^{-7} \text{ cm/cm}\cdot^\circ\text{C}$), unmatched continuous operating temperatures up to 1100°C (with peak resistance reaching 1250°C), and structural imperviousness to high-acidity chemical vapors.
As an international supplier backed by world-class high-purity quartz reserves in Donghai County, we offer Iraqi EPC contractors, public utility authorities, and industrial facility operators certified custom-dimension tubes, diffusion furnace liners, and CVD quartz vessels delivered directly to Baghdad, Basra, and Erbil.
Specially engineered to withstand sulfur dioxide, nitrogenous gases, and aggressive catalytic reaction zones in Basra and Missan hydrocarbon processing plants without vitrification or wall thinning.
Delivering 90%+ UV-C light transmittance at 254nm for large-diameter protective sleeves in municipal water disinfection systems spanning Baghdad, Mosul, and the southern marshes.
Aligning with Iraq's National Renewable Energy Strategy 2030, our diffusion furnace quartz tubes maintain absolute structural concentricity under prolonged 1150°C silicon crystallization cycles.
Manufactured from high-grade natural and synthetic silica raw materials, achieving ultra-low trace element contamination and exceptional mechanical resilience.
| Performance Parameter | Standard Grade Silica | High-Purity Semiconductor Grade | Heavy-Duty Iraqi Industrial Benefit |
|---|---|---|---|
| Purity Level ($\text{SiO}_2$) | ≥ 99.99% | ≥ 99.999% (5N) | Eliminates batch contamination in silicon refining & chemical synth. |
| Outer Diameter (OD) Scope | 50 mm – 300 mm | 300 mm – 650 mm (Custom Large) | Accommodates large furnace chambers and high-flow processing conduits. |
| Wall Thickness Uniformity | ± 0.3 mm | ± 0.1 mm – 0.15 mm | Uniform heat dissipation; resists explosive pressurized thermal stress. |
| Max Softening Point | 1680°C | 1730°C | Zero sagging or deformation under extreme continuous Iraqi ambient & kiln heat. |
| Continuous Operating Temp | 1100°C | 1200°C (Peak 1250°C) | Stable operation in high-temp vacuum annealing & gas cracking. |
| Hydroxyl ($\text{OH}^-$) Content | ≤ 20 ppm | ≤ 5 ppm (Dehydroxylated) | Prevents micro-bubble expansion and thermal blistering at >1000°C. |
| UV / IR Transmittance | ≥ 85% (at 254 nm) | ≥ 91% (UV-C Spectrum) | Maximum energy yield for photolytic sterilization and optical sensors. |
Our manufacturing facility in Donghai leverages computerized hydrogen-oxygen continuous pulling, multi-axis CNC slotting, precision cylindrical grinding, and high-temperature fire polishing. Every large-diameter quartz tube undergoes rigorous optical interferometer inspection to guarantee circularity (≤ 0.5%), wall thickness variation (≤ 0.12mm), and straightness (≤ 1.0mm/m) prior to custom export crate packing for shipping to Iraq.
Your direct manufacturer-to-project partner located in China's Silicon Capital, providing custom quartz hardware directly to the Iraqi marketplace.
Donghai County Leef Quartz Technology Co., Ltd. was founded in 2022 as a subsidiary of Lianyungang Southeast Quartz Products Co., Ltd., which was established in 2015. We are located in Donghai County, Lianyungang City, Jiangsu Province — celebrated worldwide as "China Crystal Capital" and recognized as a national-level silicon material industry base.
Blessed with superior high-purity quartz ore resources, Donghai serves as the core production epicenter of quartz raw materials in China. Relying on local high-grade quartz veins, we focus on the deep processing of quartz glass, and stand as a professional manufacturer integrating design, precision production, global sales, and specialized foreign trade.
With mature production technology, strict quality control, and end-to-end customized services, we have earned our reputation as a trusted supplier of quartz consumables and structural components for industries including photovoltaics, semiconductors, laboratories, chemical engineering, and specialized lighting across the Middle East, particularly serving expanding infrastructure in Iraq.
We operate standardized production workshops equipped with a full set of advanced equipment for quartz cutting, grinding, slotting, and high-temperature forming, establishing a complete and seamless production line from raw quartz processing to finished product inspection.
Backed by a professional production management team with over 10 years of industry experience, we specialize in process optimization and customized manufacturing. We support rapid prototyping and mass production for various complex products, maintaining an annual capacity of hundreds of thousands of pieces.
We accept both small-batch custom engineering orders and large-scale bulk government/EPC tender orders with efficient delivery timelines. By continuously upgrading production techniques, we improve dimensional precision and physical stability, providing cost-effective quartz solutions for global customers, including turnkey delivery to Iraqi industrial complexes.
All products are manufactured from high-purity fused quartz raw materials, featuring thermal resistance up to 1200°C, thermal shock immunity, corrosion resistance, high light transmittance, and electrical insulation. Widely deployed across photovoltaic manufacturing, semiconductor production, chemical analysis, corrosive fluid treatment, and lighting systems.
We provide full custom processing for special-shaped products according to client CAD drawings, samples, or on-site operating parameters. From welded quartz flanges, spiral cooling jackets, to ground-joint ports, we deliver turnkey solutions tailored for Iraqi industrial contractors.
Engineered multi-layer protective packaging guaranteeing zero breakage during intermodal transit from China to Iraqi ports and inland facilities.
Each large-diameter quartz tube is individually encased in custom high-density EPE foam cradles, wrapped in anti-static moisture-barrier film, and secured inside fumigated plywood crates with reinforced steel bands.
Offering reliable sea freight to Umm Qasr Port (Basra) for heavy bulk orders, expedited air cargo via Baghdad International Airport (BGW) or Erbil International Airport (EBL) for urgent industrial replacement parts.
Full provision of Certificate of Origin (CO), commercial invoices certified by the Iraqi Embassy/Consulate, SGS/TUV chemical purity certificates, and Certificate of Conformity (COC) for smooth customs clearance.
Select from our comprehensive lineup of fused silica tubes, custom laboratory vessels, and optical plates engineered to international standards.
Key technical and purchasing details concerning custom large-diameter quartz glass procurement for industrial deployment in Iraq.
We manufacture large-diameter quartz tubes ranging from 100mm up to 650mm in outer diameter, with maximum continuous lengths up to 3000mm depending on the wall thickness and customization requirements.
Yes. Fused quartz features an exceptionally low coefficient of thermal expansion ($5.5 \times 10^{-7} \text{ cm/cm}\cdot^\circ\text{C}$). It can easily withstand an instantaneous thermal plunge from 1100°C directly into ice-cold water without cracking.
We use multi-layer shock absorption: custom-molded high-density foam casing, anti-scratch protective wrapping, and reinforced export-grade plywood crates with internal suspension buffers. We also provide full cargo insurance coverage for every Iraqi shipment.
Yes, our facility specializes in precision deep-processing. We can weld customized KF/ISO flanges, drill laser-grade holes, produce spiral cooling jackets, and integrate ball-and-socket ground joints based on your exact engineering drawings.
Contact Donghai County Leef Quartz Technology Co., Ltd. today. Submit your technical drawings or process specifications, and our engineering team will provide a comprehensive proposal, DDP/CIF quotation to Iraq, and material certification within 24 hours.