Crystallizer copper tubes for rectangular billets are widely used in continuous casting machines producing structural steel, automotive parts, and heavy machinery components. These tubes facilitate rapid solidification of molten steel into rectangular billets, minimizing surface defects and ensuring dimensional consistency. Industries like construction, manufacturing, and automotive rely on rectangular billet crystallizer copper tubes to enhance casting speed and reduce operational risks, supporting stable and efficient production lines.
The specifications of rectangular billet crystallizer copper tubes vary greatly, typically covering billet sizes from 60×60 mm to 700×700 mm and lengths from 600 to 2000 mm. They are made from high-conductivity copper alloys such as TP2 or chromium-zirconium copper for excellent thermal performance and mechanical strength. Design variations include wall thickness ranges from 6 mm to 50 mm and internal cavity shapes tailored to billet dimensions, alongside chrome plating options to resist wear and extend tube lifespan in demanding casting environments.
Rectangular billet crystallizer copper tubes offer superior heat transfer, enabling faster casting rates and improved billet surface integrity. Their robust alloy composition and precise manufacturing reduce the risk of cracks and prolong service life, reducing downtime and maintenance costs. These tubes are critical for steel industries producing high-quality rectangular billets for infrastructure, automotive, and heavy equipment markets, delivering consistent, energy-efficient operation aligned with modern continuous casting standards.
| Attribute | Parameter | Description |
|---|---|---|
| Product Name | Crystallizer Copper Tube for Rectangular Billet | Copper mould tube optimized for continuous casting of rectangular steel billets in CCM. |
| Application | CCM rectangular billet casting | Solidifies molten steel into rectangular sections for blooms and special billets. |
| Copper Grade | Cu-Cr-Zr / Cu-Ag / Cu-DHP | Cu-Cr-Zr ideal for rectangular and irregular billets; others for varying sizes. |
| Cross-section Shape | Rectangular | Profile designed for rectangular billet production in steel casters. |
| Size Range | 70x110–550x720 mm | Covers small to large rectangular billets from 70x110 mm up to 550x720 mm. |
| Example Dimensions | 150x140 mm; 120x340–365x480 mm | Common sizes like 150x140 mm with casting radius R=6000-8000 mm. |
| Length | 680–2000 mm | Extended lengths up to 2000 mm for various CCM machine radii. |
| Wall Thickness | 6–50 mm | Robust thickness range for structural strength and heat extraction. |
| Taper Design | Single/multi/convex/diamond/parabolic | Custom tapers ensure even shell thickness in rectangular profiles. |
| Coating | Ni-Co-Cr composite / Hard chromium | Multilayer plating for superior wear resistance and bonding. |
| Thermal Conductivity | ≥390 W/m·K | High conductivity supports efficient cooling in billet casters. |
| Surface Finish | Mirror polish, Ra ≤0.1 μm | Polished surface reduces friction and improves billet quality. |
| Hardness (Coated) | HRC 40–50+ | Enhanced hardness extends tube life under thermal stress. |
| Dimensional Tolerance | Wall ±0.1 mm; ovality ≤0.2% | Precision tolerances for uniform performance. |
| Cooling Method | Water-cooled through walls | Primary water cooling for rapid solidification. |
| Service Life | 500–1000+ heats | Achieved via premium alloys, coatings, and machining. |
| Quality Standards | OEM / customer drawings | Fully customizable with inspection reports. |
| Typical Industries | Steel mills, bloom casters | Used in production of rectangular billets for rolling and forging. |





