Engineered to withstand rigorous operating conditions, our premium product lineup meets international CE compliance and strict TS 16949 standards.
Established in 2007, Zhejiang Rock Auto Co., Ltd. has been a leading manufacturer, exporter, and supplier of high-performance auto cooling system components. Over the years, we have specialized in producing a wide range of automotive cooling solutions, including radiator tubes, intercooler tubes, oil cooler tubes, as well as finished radiators, intercoolers, and oil coolers.
With more than 15 years of industry experience, Zhejiang Rock Auto has earned a reputation as a pioneer in the design and manufacturing of aluminum-based cooling products. We are committed to providing high-quality, cost-effective, and innovative solutions that meet the rigorous demands of our global customers. Our production facilities deploy advanced manufacturing techniques like controlled atmosphere brazing (CAB) and high-precision CNC tube profiling to guarantee superior heat dissipation rates and pressure tolerances.
In modern automotive and industrial ecosystems, thermal management has transitioned from a supporting engine subsystem to a mission-critical technology driving efficiency and safety.
With electric vehicles, waste heat is no longer abundant. High-performance liquid cooling plates, complex microchannel tubes, and intelligent heat pump climate loops are essential to safeguard driving range and prevent battery thermal runaway in sub-zero and ultra-hot climates.
European markets mandate rigid CE certifications and strict compliance with EU Battery Regulations. Suppliers must prove long-term reliability of structural assemblies, demanding higher mechanical tolerance in critical heat transfer elements like radiator cores and intercooler piping.
Advanced vehicle climate control applications extend beyond cars to heavy machinery, shipping, navigation, mold fabrication, and power generation. Standardizing microchannel geometries ensures reliable performance across diverse, extreme environments.
Our production philosophy centers on rigorous material control and advanced structural design. Zhejiang Rock Auto utilizes high-grade 3003 and 6063 aluminum alloys, tailored for vacuum and Controlled Atmosphere Brazing (CAB) environments. This ensures that every high-frequency welded tube and cooling plate core provides exceptional mechanical strength alongside optimized thermal conductivity.
We deploy in-house testing equipment, including cyclic pressure impulse tests, corrosion chambers, and helium leak detection systems. Achieving an airtight seal and a robust joint during the brazing process eliminates early fluid leaks, a common point of failure in high-pressure EV thermal loops and industrial heavy machinery.
By integrating customized stamping dies and high-tolerance CNC-machined profiles, we tailor internal fin geometries. This increases the active surface area of the cooling fluid paths without introducing parasitic pressure drops, thus allowing vehicle designers to downsize overall climate loop weights by up to 15%.
Navigating global supply chains requires partners who understand not just physical engineering, but the complex environment of safety, chemical, and regional certifications.
We uphold rigorous compliance with the ISO/TS 16949 quality system. Every assembly line operates under statistical process control to track dimensional accuracy, weld integrity, and material composition, ensuring seamless integration into European vehicle production chains.
Through strategic logistics partnerships, we maintain short-lead delivery capabilities to Europe, North America, and Southeast Asia. We support localized buffer inventory setups and handle Customs compliance documentation to ensure zero assembly-line disruptions.
Our engineering division provides customized CAD modeling, rapid aluminum alloy extrusion prototyping, and Thermal Fluid Dynamic (CFD) simulations. Work directly with our developers to optimize your HVAC and battery heat exchanger performance.
As cooling loops evolve towards ultra-fast 800V charging environments and eco-friendly refrigerants, we are actively shaping future standards.
Explore answers to critical technical questions asked by procurement officers and automotive engineers.
A: Every thermal control component destined for the European market undergoes rigorous testing for mechanical stress, corrosion compliance, and environmental safety (RoHS/REACH). Our facilities are ISO/TS 16949 (IATF 16949) certified, guaranteeing that safety procedures and raw material tracking adhere to EU standards.
A: High-frequency welded tubes offer superior wall-thickness consistency, lower weight, and reduced production costs. They are highly suited for automotive radiators and intercoolers where uniform thermal transfer and high burst pressure are key performance indicators.
A: Yes. We design and manufacture custom vacuum-brazed microchannel plates and stamping dies down to a 0.08mm fin pitch accuracy. This allows us to support extreme heat flux applications, such as CPU heat sinks, power electronic converters, and EV battery cooling loops.
A: Our liquid-cooled battery packs (compatible with 18650, 21700, and large format LFP cells) utilize high-tolerance coolant channels with integrated thermal barriers. This ensures uniform temperature distribution across the entire pack, keeping cells within the safe 20°C to 35°C operating window and preventing localized hotspot escalation.
A: We primarily utilize 3003 and 6000-series (such as 6063) aluminum alloys. These alloys offer the ideal balance of high structural strength, lightweight properties, excellent anti-corrosive characteristics, and superior brazing performance.
Explore our catalog of custom-engineered intercooler pipes, oil cooler cores, silicone hoses, and condenser assemblies.
Rock Auto