inner tube is cupronickel 90/10 ,outer tube is copper .Inner tube flow sea water .Marine heat exchanger

Marine heat exchanger specifications:
1) Water side pressure: 400PSI
2) Refrigerant pressure: 500PSI
3) Inner tube: coaxial corrugated copper tube /cupronickel 90/10
4) Outer tube: seamless steel tube/copper
5) Connections: pointed tube end can fit various connection diameters
6) Installation: support structure can fit your position and screw hole
diameter; the roll diameter can put various compressors
7) Specialized for marine heat pump

Advantages:
1) Increases heat transferring rate
2) Prohibits solid formation of fluid
3) Helpful to evaporator oil collection
4) Suitable for various connections
5) Specialized for heat pump
6) Saves space
7) More durable
8) Easy installation
9) Easy clean

Packing:
Carton and wooden case