Yongda
Yongda
Premium grade brass components designed specifically for South Korean commercial and high-density residential piping systems.
South Korea stands as one of the world's most advanced economies, dominated by high-tech manufacturing, shipbuilding, automobile production, and aggressive smart infrastructure developments. Under the national push for "Smart Factory" frameworks and eco-friendly structural conversions (ESG policies), local fluid systems are subject to stringent regulations regarding material safety, reliability, and precision control.
In residential construction, South Korea's iconic underfloor hydronic heating systems—known as Ondol (온돌)—demand exceptional thermal cycles, zero-leak configurations, and corrosion resistance. Our specialized DZR (Dezincification Resistant) Brass and Lead-Free alloys conform seamlessly with the requirements of the Korea Certification (KC) and Korean Industrial Standards (KS), ensuring long-term operational integrity.
Furthermore, South Korea’s booming semiconductor fabrication plants (located in clusters like Pyeongtaek and Yongin) rely heavily on ultra-clean cooling water networks and gas control infrastructure, driving a continuous need for high-performance brass connections that limit mechanical and chemical degradation.
Providing global-grade design intelligence and heavy manufacturing competence to streamline major fluid management projects.
Supporting modern Korean district heating systems with automated balancing manifolds, smart thermostats, and temperature shunt assemblies to minimize energy footprint.
Supply of high-durability gate valves, Y-strainers, and bypass systems to manage aggressive chemicals, thermal expansion, and mechanical vibration in heavy process industries.
Aligning global supply chains with lead-free brass formulations that meet regional drinking water regulations, reducing hazardous heavy metal contamination.
Established under the parent entity Yuhuan Yongda Fluid Control Co., Ltd. (founded in 1996), our newly optimized brand, Cokaren, represents a strategic pivot toward refined manufacturing aesthetics and high-tier functional durability. Operating under our core slogan, "Keep flowing, keep warming", Cokaren bridges the gap between global industrial scale and localized installation demands.
To address the sophisticated import needs of South Korea, we provide dedicated localization support. This includes customized packaging layout with Korean labeling, alignment with metric/KS threads, and proactive certification processing. Our goal is to serve as an OEM/ODM partner that feels local, eliminating lead-time concerns and administrative delays.
A statistical snapshot of Yuhuan Yongda's operational scale and engineering infrastructure supporting international projects.
At Yuhuan Yongda, we believe that reliable fluid control components are built on a foundation of strict process governance. Our enterprise operates under the policy: "Fine work, no leakage." By aligning corporate growth directly with employee welfare and continuous technological innovation, we deliver dependable product quality.
Our production plants have successfully achieved the following international certifications, ensuring your projects comply with modern safety standards:
Integrating our specialized valve portfolio into the domestic water heater, boiler, and hydronic manifold networks.
The first line of defense in domestic water systems. Removes 98% of particulates and scale to prevent blockages.
Manages water inflow and outflow for boilers. Equipped with a reliable spherical spool for quick isolations.
Discharges trapped air pockets in water systems automatically, maintaining consistent heat distribution.
Combines hot and cold feed water to balance supply temperatures, extending pipeline lifespan.
Monitors ambient conditions to control electronic actuator valves, optimizing indoor comfort.
Filters system debris, controls loop manifolds, and monitors local pressure and temperature differentials.
Distributes system water to individual room loops. Features durable forged brass bodies and precise flow balance valves to ensure uniform heat dispersion.
Continuous evolution of alloy formulation and smart flow control accessories to meet changing global regulations.
In water systems with specific mineral concentrations, standard brass can lose zinc, weakening its structural integrity. We supply specialized DZR alloys (such as CW602N and CZ132) that prevent de-alloying and ensure durability.
To meet dynamic environmental policies, Cokaren has optimized its manufacturing lines to process lead-free alloys (< 0.1% Pb content). These products meet NSF/ANSI 372 and Korea's strict drinking water safety standards.
Our upcoming product line integrates wireless control capabilities into manifold balancing valves. This allows real-time flow adjustments and leak detection, linking directly with home automation networks.
Explore our certified range of brass connection solutions, built to withstand demanding industrial water and gas cycles.
Answers to common questions from engineering coordinators and purchasing departments in South Korea.
Our brass fittings for drinking water applications can be cast and machined using lead-free alloys (< 0.25% Pb content), complying with the Korea Certification (KC) guidelines. This prevents the release of heavy metals and aligns with domestic drinking water safety standards.
For domestic underfloor heating networks (Ondol loops), we recommend and supply Dezincification Resistant (DZR) Brass, such as CW602N. This alloy is specifically formulated to resist zinc loss in warm, oxygenated water, maintaining the structural strength of the fitting.
Yes. Our factory operates over 600 production machines, including 80 specialty units. We can manufacture fittings to meet specific KS thread specifications (like KS B 0222 PT threads) or custom designs based on your engineering drawings.
Standard production runs take 30 to 45 days after order confirmation. Because our production facility is located in Yuhuan, Zhejiang, near major shipping centers like Ningbo and Shanghai, transit times to Busan or Incheon are typically only 2 to 5 days.
Our technical engineering team is ready to review your project drawings and provide detailed quotes for your specific requirements. Get in touch with our team today.