Top Five Medium Frequency Furnace Suppliers in South Korea [2025]

When it comes to longevity and trust in the South Korean medium frequency furnace market, Hanjin Industrial Systems stands tall. Founded in 1985, this Seoul-based company has spent over three decades refining its craft, evolving from a small workshop into a global player with clients in over 40 countries. What sets Hanjin apart is its unwavering focus on reliability—an attribute that has made it a favorite among automotive and construction firms, where downtime can cost millions.

Hanjin's medium frequency electricity furnace equipment is designed with the modern recycler in mind. Their latest models, such as the HF-MF 5000 series, boast energy efficiency ratings that outperform industry standards by 15%, thanks to advanced inverter technology and heat recovery systems. But it's not just about melting metal; Hanjin understands that a complete solution includes addressing environmental concerns. That's why each furnace comes with optional air pollution control system equipment, including high-efficiency bag filters and scrubbers, ensuring compliance with even the strictest emissions regulations.

What truly resonates with customers, though, is Hanjin's commitment to after-sales support. "We don't just sell a furnace—we build a partnership," says Park Joon-ho, Hanjin's director of customer service. "Our team of engineers is available 24/7, and we offer on-site training for operators to ensure they get the most out of their equipment." This dedication has earned Hanjin repeat business from major players like Hyundai Steel and Kia Motors, who value the peace of mind that comes with a supplier that stands behind its products.

Looking ahead, Hanjin is investing heavily in smart furnace technology, integrating IoT sensors that monitor temperature, energy usage, and maintenance needs in real time. "By 2026, we aim to have all our furnaces connected to a cloud platform, allowing predictive maintenance and remote troubleshooting," Park adds. For businesses seeking a blend of tradition and innovation, Hanjin Industrial Systems remains a top choice.

For industries that demand sheer power, Seoul Furnace Technologies has carved a niche as South Korea's go-to supplier for high-capacity medium frequency furnaces. Established in 1992, this company cut its teeth serving the shipbuilding and heavy machinery sectors, where melting large volumes of steel and aluminum is a daily requirement. Today, their furnaces—ranging from 1-ton lab models to 10-ton industrial giants—are renowned for their ability to handle tough scrap metal with speed and consistency.

At the core of Seoul Furnace's success is its focus on engineering excellence. The company's R&D team, based in Daejeon, spends countless hours testing new materials and designs to improve performance. One breakthrough is their patented "EcoCoil" induction system, which reduces energy loss by 20% compared to conventional coils, translating to significant cost savings for operators. Their medium frequency electricity furnace equipment also features modular construction, allowing clients to scale up production by adding components rather than replacing entire systems—a boon for growing businesses.

Sustainability is another key pillar for Seoul Furnace. Recognizing the environmental impact of metal melting, the company has integrated air pollution control system equipment into its furnace packages as standard. Their "CleanMelt" series, for example, includes a multi-stage filtration system that captures 99.7% of particulate matter and harmful gases, making it a popular choice for clients in Europe and North America with stringent green regulations.

"We believe that power doesn't have to come at the expense of the planet," explains Lee Soo-jin, Seoul Furnace's chief sustainability officer. "Our furnaces are designed to maximize output while minimizing waste—whether that's energy, materials, or emissions." This philosophy has helped the company secure contracts with global shipbuilders like Samsung Heavy Industries and industrial giants such as POSCO, South Korea's leading steelmaker.

For businesses that need to melt large quantities of metal quickly and cleanly, Seoul Furnace Technologies delivers a combination of brute force and eco-conscious engineering that's hard to match.

Not every recycling facility or foundry has the space or budget for a massive industrial furnace—and that's where Daegu Metallurgy Solutions comes in. Founded in 2001, this Daegu-based supplier has made a name for itself by specializing in compact, high-performance medium frequency furnaces tailored to small and mid-sized businesses. From jewelry manufacturers melting precious metals to local recycling centers processing scrap steel, Daegu's equipment proves that big results can come in small packages.

Daegu's flagship product, the DM-MF 1000, is a case in point. Weighing just 2.5 tons and requiring only 15 square meters of floor space, this 1-ton capacity furnace can melt steel in under 45 minutes—faster than many larger models on the market. "Our clients often tell us they were surprised by how much they could achieve with such a compact unit," says Kim Min-ji, Daegu's sales manager. "A small scrapyard in Busan, for example, was able to triple its output after switching to our furnace, simply because it could melt more batches per day with less downtime."

In addition to size, Daegu prioritizes ease of use. Their furnaces come with intuitive touchscreen controls, pre-programmed melting profiles for common metals (aluminum, copper, brass), and simplified maintenance procedures. "We know that many of our clients don't have dedicated metallurgists on staff," Kim notes. "So we designed our equipment to be as user-friendly as possible, with clear instructions and minimal technical jargon."

While small in stature, Daegu's furnaces don't skimp on durability. The company uses high-grade refractory materials imported from Germany, ensuring linings last up to 1,500 melts before needing replacement—double the industry average for compact models. They also offer a range of complementary equipment, such as water process equipment for cooling systems and small-scale air pollution control units, making it easy for clients to build a complete, space-efficient melting setup.

For businesses that need reliable, fast, and space-saving metal melting furnace equipment, Daegu Metallurgy Solutions is a testament to the idea that "small" doesn't mean "compromised."

Established in 1978, Busan Metal Processing Co. (BMP) is one of South Korea's oldest and most versatile medium frequency furnace suppliers. What began as a local provider of metalworking tools has grown into a company known for its ability to craft custom furnace solutions for clients with unique requirements. Whether it's a specialized furnace for melting titanium for aerospace parts or a high-temperature model for processing industrial scrap, BMP prides itself on saying, "We can build that."

BMP's custom approach starts with a deep dive into the client's operations. "We don't just ask, 'What size furnace do you need?'" explains Choi Sung-ho, BMP's lead engineer. "We ask, 'What metals are you melting? What's your power supply like? What are your production goals for the next five years?' This allows us to design a furnace that fits their exact needs, not just today, but down the line."

One notable example is a custom medium frequency furnace BMP built for a leading aerospace supplier in 2023. The client needed to melt small batches of high-purity titanium alloy with minimal contamination—a challenge given titanium's reactivity to oxygen. BMP responded by designing a furnace with an argon-purged chamber, specialized ceramic linings, and precision temperature controls that maintain heat uniformity within ±2°C. The result? A furnace that reduced scrap rates by 30% and improved alloy consistency, helping the client secure a major contract with Boeing.

Beyond custom builds, BMP is also a leader in energy recovery technology. Their "EcoRecover" system, available on most furnace models, captures waste heat from the melting process and repurposes it to preheat scrap metal or power facility lighting, cutting overall energy costs by up to 25%. When paired with their air pollution control system equipment, which includes electrostatic precipitators and NOx reduction units, BMP's furnaces offer a holistic approach to sustainable metal processing.

With a client list that spans steel production, aerospace, and industrial recycling, BMP has proven that when it comes to solving complex melting challenges, customization is key. For businesses with unique needs, Busan Metal Processing Co. is more than a supplier—it's a partner in innovation.

The youngest company on our list, Incheon Recycling Equipment Ltd. (IRE), was founded in 2008 with a clear mission: to develop medium frequency furnaces that seamlessly integrate with modern recycling systems, particularly in the fast-growing battery and e-waste sectors. In just 17 years, IRE has become a trailblazer in smart furnace technology, earning a reputation for innovation and adaptability.

What sets IRE apart is its focus on connectivity. Their furnaces are equipped with the "SmartMelt" platform, a cloud-based system that monitors every aspect of the melting process—from power consumption and temperature to refractory wear and emissions—via sensors and AI algorithms. Operators can access real-time data from their phones or laptops, receive alerts for potential issues, and even adjust settings remotely. "We're not just selling a furnace; we're selling a data-driven tool that helps recyclers optimize their entire operation," says Kim Ji-hyun, IRE's CEO.

This smart technology is particularly valuable in the lithium-ion battery recycling space, where precision is critical. IRE's medium frequency electricity furnace equipment is often paired with their li-ion battery breaking and separating systems, creating a closed-loop process that recovers valuable metals like lithium, cobalt, and nickel with minimal loss. "Battery recycling is a delicate balance," Kim explains. "You need to melt the metal components without damaging the valuable materials, and our furnaces' precise temperature control makes that possible."

IRE also leads the way in low-emission design. Their latest furnace models, the EcoMelt series, emit up to 40% less CO2 than conventional furnaces, thanks to energy-efficient inverters and heat-resistant insulation made from recycled ceramic fibers. When combined with their air pollution control system equipment, which includes catalytic converters and VOC abatement units, IRE's furnaces are helping clients meet the strictest sustainability goals in the EU and North America.

As the world shifts toward a circular economy, IRE's focus on integration, smart technology, and sustainability positions it as a supplier for the future. For businesses in battery recycling, e-waste processing, or any sector where data and eco-friendliness are priorities, Incheon Recycling Equipment Ltd. is redefining what a medium frequency furnace can do.