Transition Joints for Shipbuilding & Offshore
Aluminium superstructures save weight on ships and offshore platforms, but aluminium cannot be welded directly to a steel hull. Triplate® and Inox-Triplate® are explosion-welded transition joints that make the connection by welding: steel to steel on one side, aluminium to aluminium on the other.
Applications
- Aluminium superstructures on cruise ships, ferries, naval and patrol vessels
- Offshore living quarters and helidecks on steel platforms
- LNG tankers, wind turbines, trucks and trailers
Why shipyards choose Triplate®
- Approved by Lloyd’s Register and DNV; compliant with MIL-J-24445A
- Zero defects reported since 2008
- 100% dense, vacuum-clad interface — no galvanic or crevice corrosion, no cracks in bending
- Thicknesses 19, 28 and 34 mm; plates up to 3,800 × 1,350 mm; water-jet cut shapes
- Used on the Queen Mary 2 and in Fincantieri cruise ships
Frequently Asked Questions
Can aluminium be welded to steel on a ship?
Not directly. A structural transition joint such as Triplate® is welded to the steel hull on one side and to the aluminium superstructure on the other.
What is the maximum welding temperature for Triplate®?
Keep the Triplate® interface below 315 °C during welding.
Which approvals does Triplate® hold?
Triplate® is approved by Lloyd’s Register and DNV and complies with MIL-J-24445A.