High-Quality High Purity Quartz Rod / Fused Silica Rod from China Suppliers & Factory for Semiconductor and Laboratory Use Suppliers, Factory

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Our high-performance quartz rod is a cylindrical product composed of fused silica (SiO₂ ≥ 99.99%), manufactured by a leading China factory. This premium material offers exceptional high-temperature resistance with a softening point around 1730°C and can be used long-term at temperatures up to 1100°C. With excellent UV-IR transmittance, low thermal expansion, and remarkable chemical inertness (resistant to most acids except HF), our quartz rods are also outstanding electrical insulators. As trusted suppliers, we provide essential materials widely used in optics, semiconductors, lasers, laboratory instruments, and high-temperature applications, perfect for precision and harsh-environment settings.
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Made from high-purity silicon dioxide (SiO₂), our quartz rods are crafted by melting natural or synthetic quartz, then drawn or molded into solid cylindrical shapes in our state-of-the-art China factory.

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These quartz rods serve as fundamental semi-finished materials, ideal for further processing into tubes, supports, or optical components, meeting the diverse needs of various industries.

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Product Description

📋 Product Specifications
📐 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
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All dimensions are in millimeters (mm). Tolerances apply to both width and height of cross-sectional dimensions.
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Frequently Asked Questions

🔹 What do the cross-sectional dimensions represent?
The cross-sectional dimensions refer to the width × height measurements (in millimeters) of the material's cross-section. For example, 3×3 means the piece measures 3 mm in both width and height.
🔹 What does the tolerance value mean in this table?
Tolerance indicates the allowable deviation from the stated dimension. For instance, a tolerance of ±0.1 mm means the actual dimension can be up to 0.1 mm larger or smaller than the specified size.
🔹 Why do larger dimensions have higher tolerances?
As dimensions increase, manufacturing precision naturally becomes slightly more variable. Larger cross-sections require more material and processing, making tighter tolerances more difficult and costly to maintain consistently.
🔹 Why is the standard length range shorter for 15×15 and 20×20 sizes?
Larger cross-sections (15×15 and 20×20) are typically available in lengths up to 500 mm rather than 1000 mm. This is due to material weight, handling constraints, and standard production specifications for these sizes.
🔹 Can custom lengths outside the standard range be ordered?
The table reflects standard available lengths. For custom length requirements outside the listed ranges, it is recommended to contact the supplier or manufacturer directly to discuss feasibility and lead times.
🔹 Are all dimensions and tolerances listed in millimeters?
Yes, all cross-sectional dimensions, tolerances, and standard lengths listed in this table are expressed in millimeters (mm), following standard metric measurement conventions.

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