Engineered for excellence, designed for durability
In the modern industrial era, the demand for lightweight, high-strength, and thermally efficient materials has catapulted High-Frequency Welded Aluminum Tubes into the spotlight. Across the globe, industries ranging from automotive manufacturing to aerospace and HVAC systems are transitioning from traditional heavy metals to advanced aluminum alloys. This shift is primarily driven by the global mandate for energy efficiency and carbon footprint reduction.
High-frequency induction welding (HFIW) technology represents the pinnacle of aluminum tube manufacturing. Unlike traditional welding methods, HF welding utilizes skin effect and proximity effect to create a precise, narrow fusion zone without the need for filler metals. This results in a seam that is as strong as the parent material, offering superior pressure resistance and thermal conductivity.
Expertise, Authority, and Reliability in Every Tube We Manufacture
Established in 2007, we bring over a decade and a half of research and development in aluminum-based cooling products.
Proudly ISO/TS 16949 certified, ensuring every radiator tube and intercooler tube meets rigorous international standards.
Serving diverse markets in shipbuilding, automobile, and heavy industry across North America, Europe, and Asia.
Equipped with state-of-the-art Brazing Furnaces, Fin Machines, and High-Frequency Welding lines for precision output.
We provide tailored cooling solutions, from initial design strategy to final high-volume mass production.
Our aluminum tubes are 100% recyclable, contributing to a circular economy and lower environmental impact.
Year Established
16949 Certified
Quality Inspected
Global Regions
The industry is currently witnessing several transformative trends that are reshaping how manufacturers and exporters operate:
As a leading Chinese factory, we understand that global procurement managers prioritize Reliability, Lead Time, and Material Traceability. Our production facility in Zhejiang integrates the entire supply chain, from aluminum coil selection to high-precision welding and automated finning. This vertical integration allows us to offer competitive pricing while maintaining the "Zero Defect" quality philosophy essential for automotive and aerospace suppliers.
Our products find their way into a vast array of local applications:
Zhejiang Rock Auto Co., Ltd. (Datang) has earned its reputation as a pioneer in the design and manufacturing of aluminum-based cooling products. With more than 15 years of industry experience, we approach every project with a well-defined strategy, ensuring that our customers receive only the best in terms of performance.
Our R&D unit is the cornerstone of our business. We conduct detailed research and surveys to improve the durability of our products. This commitment allows us to design new products with superior functionality, tailored to the specific needs of our clients. Whether it's high-frequency welded spiral L-fin tubes or extruded serrated aluminum pipes, our technology ensures maximum heat transfer efficiency.
We utilize premium 3003 series aluminum (manganese-based) for its excellent corrosion resistance and 4343/7072 cladding for superior brazing properties.
Our high-frequency lines maintain wall thickness tolerances within ±0.02mm, ensuring consistent performance in high-pressure applications.
The thin-wall design of our welded tubes allows for higher thermal conductivity compared to seamless alternatives, reducing overall weight by up to 30%.
Discover our range of high-performance tubes for every industrial need
As a premier High-Frequency Welded Aluminum Tubes Factory & Exporter, Zhejiang Rock Auto Co., Ltd. is committed to the mission of delivering high-quality and cost-effective cooling solutions. Our vision is to be a global leader recognized for advanced technologies and environmental stewardship.
Rock Auto
