Copper M8 threaded connection pieces, precision marine hardware for ships, CNC machining services

Application, Characteristics and Machining Advantages of Copper Pins in Shipbuilding Industry

I. Typical Applications (Specific Products)

1. Steering & Propulsion System

• Rudder pintles & rudder pins
   
  Core connecting shafts for semi-suspended and suspended rudders, used to connect rudder blades with rudder stocks or rudder horns.
• Stern shaft support pins & bushes
   
  Support the propeller shaft, transmit main engine power, and resist seawater corrosion and cavitation erosion.
• Steering gear linkage pins
   
  Pivots for tillers, connecting rods and shifting forks, bearing frequent reciprocating loads.

2. Deck & Mooring Equipment

• Windlass, winch & crane pins
   
  Used in cable drums, boom pivots and lifting mechanisms, carrying heavy loads and impact forces.
• Mooring roller and fairlead pins
   
  Used with cables and drums to reduce wear and ensure smooth operation.
• Hatch cover & side door hinge pins
   
  Used for opening and closing hatches and side doors, suitable for outdoor and humid marine environments.

3. Marine Auxiliary Systems

• Seawater pump & valve pins
   
  Used in pump shafts and valve stems, exposed to seawater and corrosive media.
• Accommodation ladder & lifeboat davit pins
   
  Carry personnel and equipment, requiring high safety and fatigue resistance.

II. Main Characteristics

1. Excellent seawater corrosion resistance
    
   Forms a dense protective oxide film in saltwater, salt spray and wet‑dry alternating conditions, with long service life.
2. Good wear resistance and self‑lubricating property
    
   Tin bronze and aluminum bronze have stable friction performance; leaded bronze provides natural self‑lubrication.
3. High impact and fatigue resistance
    
   Suitable for heavy‑load, high‑frequency and alternating load conditions such as rudders and winches.
4. Good machinability and dimensional stability
    
   Less deformation during processing and long‑term service.
5. Non‑magnetic option available
    
   Suitable for areas near magnetic compasses and navigation equipment.

III. Advantages of Machined Copper Pins

1. High precision and good fit
    
   CNC turning, milling and grinding ensure tight tolerances, roundness and surface finish, enabling precise matching with bushes and housings.
2. Suitable for complex structures
    
   Can machine tapers, spheres, threads, keyways and special profiles to meet customized marine components.
3. Stable quality and high efficiency
    
   Copper alloys have good cutting performance, low tool wear, high production efficiency and low rejection rate.
4. Dimensional stability
    
   Stress relief annealing and controlled processing ensure minimal deformation in long‑term service.
5. Compliance with classification society standards
    
   Machining and inspection can meet requirements of CCS, BV, LR, DNV and other classification societies.
6.  

We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.

Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001. We have Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment, which can effectively provide customers with the best technical solutions.

Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment.

Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.

Our customers include , bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.