DEFENSE · MARINE



Technology That Commands Extreme Environments —


Powering the Heart of Korea’s Defense and Shipbuilding Industries

Wonjin delivers uncompromising reliability that never fails 

whether in harsh offshore conditions or high-intensity combat environments.


Our corrosion-resistant specialty alloys and next-generation HEA (High-Entropy Alloy)

technologies provide fundamental protection against salt-induced degradation

while maintaining stable electrical performance even under severe impact and shock loads.


From the core systems of naval vessels to advanced guided weapon platforms,
Wonjin’s precision-engineered components serve as both the backbone of national defense

and a driving force behind the competitiveness of the shipbuilding industry.



※ The images provided are for reference purposes only.
Final production feasibility and specifications will be confirmed upon review of official drawings and verified technical requirements.

Defense & Aerospace Precision Components
Defense & Aerospace Precision Components


Defense & Aerospace Components


Defense and aerospace components are high-reliability structural parts engineered to operate in extreme environments.

They are exposed simultaneously to high impact, high pressure, elevated temperatures,

cyclic loading, vibration, and fatigue conditions — in industries where even a single defect is unacceptable.


Application Areas


• Artillery Barrel & Turret Structural Components
• Tactical Vehicle Suspension Arms
• Hydraulic Cylinder Housings
• Satellite Antenna Gimbal Joints
• Aircraft Landing Gear Connectors
• Rocket Engine Turbine Structural Components


Representative Components:


Artillery Barrel & Turret Structural Component
Tactical Vehicle Suspension Arm
Hydraulic Cylinder Housing
Satellite Antenna Gimbal Joint
Aircraft Landing Gear Connector
Rocket Engine Turbine Structural Component






Shipbuilding & Marine Corrosion-Resistant Components
Shipbuilding & Marine Corrosion-Resistant Components


Shipbuilding & Marine Components


Shipbuilding and marine components are structural and fluid system parts

designed to operate reliably under seawater exposure, salinity, high loads, and long-term fatigue conditions.


In marine environments, corrosion resistance and extended durability are essential performance requirements.


Marine components perform the following key functions


• Support propeller and shaft structures
• Control and connect fluid flow systems
• Provide structural support for high-load fastening and connection points
• Maintain structural stability in seawater environments
• Withstand vibration and wave-induced loads


Representative Components


Propeller Shaft Hub
Marine Valve Body & Fitting
Pipe Flange & Coupling
Anchor Chain Connector