Jonghap Polestar Co., Ltd., established in 1980 and located in the Mieum General Industrial Complex in Gangseo-gu, Busan, is a small and medium-sized enterprise specializing in the manufacturing of ship components and the repair of engine parts. The company's core business involves special welding, reconditioning, and new manufacturing of critical components for large marine diesel engines, such as piston crowns, exhaust valves, and cylinder covers. Based on its long history and accumulated technical expertise, the company stably provides high-quality ship equipment and maintenance services to major domestic and international shipbuilding and shipping companies.

"Jonghap Polestar Co., Ltd. is a ship repair company established in 1980 that provides high-quality special welding services and maintenance for marine engine spare parts. Its main products include the manufacturing and repair of marine engines (UEC) and ship components (crowns, cylinder covers, valves)."

Business Areas

• Recondition Service: The company provides precision reconditioning and repair services for major wear parts used in large marine diesel engines, such as piston crowns, piston skirts, exhaust valve spindles, and cylinder covers. By applying advanced surface treatment and machining technologies, it restores durability and performance to a level comparable to new products.
• Special Welding Works: The company performs hardfacing and overlay cladding on ship engine parts using various special welding techniques such as TIG, MIG, PTA, and submerged arc welding. This enhances the wear and corrosion resistance of marine engine parts exposed to high temperatures and pressures.
• New Product Manufacture: The company precision-machines and manufactures core ship components, such as valve spindles and seat bottoms, installed in 2-stroke and 4-stroke marine diesel engines. Through thorough quality control, it supplies parts to domestic and international ship engine makers and shipping companies.

Products

• Piston Crown & Skirt: These are core driving components that withstand high temperatures and high pressure inside the combustion chamber of a ship's main engine. They are manufactured and reconditioned through special build-up welding, plating, and precision grinding.
• Exh. Valve Spindle & Seat: These are essential heat-resistant and wear-resistant parts used for controlling engine exhaust gas. They help extend lifespan and maintain engine efficiency through laser cladding and special welding repairs.
• Cylinder Cover & Fuel Injection Parts: These include cylinder covers that form the upper part of the ship engine's combustion chamber, as well as precision fuel injection-related parts such as plungers and barrels. They are supplied after undergoing machining and repair processes that meet strict classification society standards.

Special Notes

• Global Engine Maker Technical Certification and Partnerships: The company has obtained official technical and service certifications from world-renowned engine makers such as MAN Energy Solutions (MDT), Wärtsilä, and UEC, earning recognition for its reliable quality capabilities.
• Over 40 Years of Expertise in Special Welding and Machining: Since its establishment in 1980, the company has focused on the marine ship parts sector, building high technical barriers based on its accumulated expertise in special welding, laser cladding, and precision machining.
• Continuous R&D and Industry-Academic Cooperation: The company actively promotes R&D for smart factory processes and advanced repair welding technologies in collaboration with specialized research institutes and universities, such as the Korea Institute of Materials Science (KIMS) and Korea Maritime & Ocean University.

Recruitment Information

• Main Hiring Positions: Production staff (CNC machining, general lathe operation), special welders (TIG, CO2), production management, packaging and material management, etc.
• Benefits: Four major social insurance programs (National Pension, Health Insurance, Employment Insurance, Industrial Accident Compensation Insurance), annual leave, regular health check-ups, support for family events, performance bonuses, etc.

💡 A Word from JOBPLOY
This is a manufacturing workplace primarily focused on special welding of ship engine parts and CNC lathe machining of large components. Since the work involves handling heavy objects and high-temperature welding, wearing safety gear on-site and strictly following safety protocols are crucial. As the work requires precise operations such as checking drawing dimensions and operating machinery, accurate communication of work terminology with Korean colleagues and a keen sense of safety are essential for stable adaptation.