SEMYUNG ELECTRIC MACHINERY, The Republic of Korea - Komachine Supplier Profile and Product List

- Semyung Electric Machinery Co., Ltd. is a specialized company established in 1962, focusing on processing ferrous and non-ferrous metals, primarily producing fittings for transmission/distribution lines and electric railway lines, as well as automotive aluminum parts. The company has played a pivotal role in the development of national key industries by contributing to the establishment of domestic power networks and the KTX high-speed rail electrification project. Notably, it is a leading power equipment manufacturer that successfully developed and localized ultra-high voltage transmission line fittings for 154kV, 345kV, and 765kV systems.Semyung Electric Machinery Co., Ltd. is a specialized company established in 1962, focusing on processing ferrous and non-ferrous metals, primarily producing fittings for transmission/distribution lines and electric railway lines, as well as automotive aluminum parts. The company has played a pivotal role in the development of national key industries by contributing to the establishment of domestic power networks and the KTX high-speed rail electrification project. Notably, it is a leading power equipment manufacturer that successfully developed and localized ultra-high voltage transmission line fittings for 154kV, 345kV, and 765kV systems.
- Transmission and Distribution Line Fittings: A product line for ultra-high voltage transmission and distribution lines, including 154kV, 345kV, and 765kV systems. 154kV products include insulator string fitting sets (single and bundled conductors), overhead ground wire fitting sets, and lightning arrester installation devices. 345kV products consist of insulator string fitting sets for 2- and 4-conductor systems, and overhead ground wire fitting sets.Transmission and Distribution Line Fittings: A product line for ultra-high voltage transmission and distribution lines, including 154kV, 345kV, and 765kV systems. 154kV products include insulator string fitting sets (single and bundled conductors), overhead ground wire fitting sets, and lightning arrester installation devices. 345kV products consist of insulator string fitting sets for 2- and 4-conductor systems, and overhead ground wire fitting sets.
- Electric Railway Fittings: Specialized fittings for supporting and connecting overhead contact lines that supply power to high-speed railways (KTX), conventional railways, and subways. These high-value-added products demand high durability and precision to ensure stable power supply even during high-speed train operation.Electric Railway Fittings: Specialized fittings for supporting and connecting overhead contact lines that supply power to high-speed railways (KTX), conventional railways, and subways. These high-value-added products demand high durability and precision to ensure stable power supply even during high-speed train operation.
- Automotive AL Parts and Non-ferrous Metal Casting/Forging: Leveraging long-accumulated expertise in non-ferrous metal casting and forging, the company develops and produces various cast and forged products such as automotive intake manifolds and lower arms. It also manufactures Sectional Beams for textile looms, diversifying its business portfolio.Automotive AL Parts and Non-ferrous Metal Casting/Forging: Leveraging long-accumulated expertise in non-ferrous metal casting and forging, the company develops and produces various cast and forged products such as automotive intake manifolds and lower arms. It also manufactures Sectional Beams for textile looms, diversifying its business portfolio.
- HVDC (High Voltage Direct Current) Fittings Technology: Leading the next-generation power infrastructure market by being the first in Korea to develop and commercialize 500kV-class HVDC fittings. Currently engaged in technology development through a consortium with the Korea Electrotechnology Research Institute for participation in large-capacity transmission line projects.HVDC (High Voltage Direct Current) Fittings Technology: Leading the next-generation power infrastructure market by being the first in Korea to develop and commercialize 500kV-class HVDC fittings. Currently engaged in technology development through a consortium with the Korea Electrotechnology Research Institute for participation in large-capacity transmission line projects.
- Over Half a Century of Experience and Technical Know-how: Possessing accumulated casting, forging, and processing technical know-how in transmission/distribution and electric railway line fittings for over 60 years since its establishment in 1962. This expertise forms the foundation for its pivotal role in building domestic power and railway networks.Over Half a Century of Experience and Technical Know-how: Possessing accumulated casting, forging, and processing technical know-how in transmission/distribution and electric railway line fittings for over 60 years since its establishment in 1962. This expertise forms the foundation for its pivotal role in building domestic power and railway networks.
- Localization of Ultra-High Voltage Transmission Fittings and HVDC Technology Leadership: Successful self-development and localization of 154kV, 345kV, and 765kV transmission fittings, achieving import substitution and technological accumulation. The first in Korea to develop and commercialize 500kV-class HVDC fittings, securing a leading position in the next-generation power infrastructure market.Localization of Ultra-High Voltage Transmission Fittings and HVDC Technology Leadership: Successful self-development and localization of 154kV, 345kV, and 765kV transmission fittings, achieving import substitution and technological accumulation. The first in Korea to develop and commercialize 500kV-class HVDC fittings, securing a leading position in the next-generation power infrastructure market.
- Stable Supply Chain and Key Customer Base: Reliable supply of high-quality products to essential national infrastructure partners such as Korea Electric Power Corporation (KEPCO), Korea Railroad Corporation (Korail), and various metropolitan subway corporations. High business concentration with fittings products accounting for 98% of total sales.Stable Supply Chain and Key Customer Base: Reliable supply of high-quality products to essential national infrastructure partners such as Korea Electric Power Corporation (KEPCO), Korea Railroad Corporation (Korail), and various metropolitan subway corporations. High business concentration with fittings products accounting for 98% of total sales.
- Continuous R&D Investment and Technology Portfolio Expansion: Expanding its technology portfolio through continuous R&D investment based on proprietary core technologies. Demonstrated expertise in the field through its patent portfolio and project execution history.Continuous R&D Investment and Technology Portfolio Expansion: Expanding its technology portfolio through continuous R&D investment based on proprietary core technologies. Demonstrated expertise in the field through its patent portfolio and project execution history.
- Selection as a 'Prestigious Long-Lived Company' and Social Contribution: Recognized as an exemplary company fulfilling economic and social responsibilities, having been selected as a 'Prestigious Long-Lived Company' by the Ministry of SMEs and Startups. Active in social contribution activities, including the establishment of the Seoryung Scholarship Foundation in 1985.Selection as a 'Prestigious Long-Lived Company' and Social Contribution: Recognized as an exemplary company fulfilling economic and social responsibilities, having been selected as a 'Prestigious Long-Lived Company' by the Ministry of SMEs and Startups. Active in social contribution activities, including the establishment of the Seoryung Scholarship Foundation in 1985.
- Power Industry: Construction and maintenance of transmission, substation, and distribution lines that deliver electricity from power plants across the country. Contributing to improving the reliability of the national power grid, extending line lifespan, and reducing maintenance costs.Power Industry: Construction and maintenance of transmission, substation, and distribution lines that deliver electricity from power plants across the country. Contributing to improving the reliability of the national power grid, extending line lifespan, and reducing maintenance costs.
- Railway Industry: Construction of overhead contact lines that supply power to high-speed railways (KTX), conventional railways, and subways. Ensuring safe and punctual train operations and enhancing the reliability of public transportation systems.Railway Industry: Construction of overhead contact lines that supply power to high-speed railways (KTX), conventional railways, and subways. Ensuring safe and punctual train operations and enhancing the reliability of public transportation systems.
- Automotive Industry: Manufacturing of automotive aluminum parts using non-ferrous metal casting and forging technologies.Automotive Industry: Manufacturing of automotive aluminum parts using non-ferrous metal casting and forging technologies.
- Textile Industry: Production of Sectional Beams used in textile looms.Textile Industry: Production of Sectional Beams used in textile looms.
- Taiwan (planned), Southeast Asia (planned)Taiwan (planned), Southeast Asia (planned)
- Central and South America (planned)Central and South America (planned)
- Patents: Holds a patent portfolio of 47 patents. Secures intellectual property rights related to technology, including invention patents, utility models, and design registrations.Patents: Holds a patent portfolio of 47 patents. Secures intellectual property rights related to technology, including invention patents, utility models, and design registrations.
- Certifications: Possesses numerous certifications such as Main-Biz (Management Innovation Type), Export Promising Small and Medium Business, Prestigious Long-Lived Company, CE certification, KEPCO Excellent Cooperative SME, Quality Management System (ISO) certification, Inno-Biz (Technology Innovation Type) certification, and Single PPM.Certifications: Possesses numerous certifications such as Main-Biz (Management Innovation Type), Export Promising Small and Medium Business, Prestigious Long-Lived Company, CE certification, KEPCO Excellent Cooperative SME, Quality Management System (ISO) certification, Inno-Biz (Technology Innovation Type) certification, and Single PPM.
- Awards: Awarded the Presidential Commendation at the National Productivity Awards in 2021.Awards: Awarded the Presidential Commendation at the National Productivity Awards in 2021.