Industries · Marine

Welding solutions for vessels that live in seawater

Seawater gets into everything on a ship. Pumps cavitate, condenser tubes thin from the inside, and machinery that runs hot one watch and cold the next cracks where dissimilar metals meet. Repairs happen at sea or alongside, with the part still in the vessel. Pick an area of the ship to see which components fail, how, and what we would put on them.

6
Components mapped
3
Areas aboard
500+
Authorised distributors
Cutaway view of a bulk carrier — the hull opened along its length to show the engine room with its main engine and generators, the pump room, and the heat exchanger and piping space aft of it.
Vessel machinery spaces 6 components mapped Click a numbered pin on the vessel
Area

The whole vessel

Every mapped component aboard, from the engine room to the condenser.

Component Base metal Wear factor Area Recommended solution
Engine Blocks Cast Iron Impact Engine Room STAVITRODE A 42 (opens in a new tab) Cast Iron Welding Electrodes
Water Pump Housing Cast Iron Erosion/Corrosion Engine Room STAVITRODE A 43 (opens in a new tab) Cast Iron Welding Electrodes
Pump Impellers Steel/Bronze Corrosion/Abrasion Pumps & Valves STAVITRODE A 50 (opens in a new tab) Repair - Joining Electrode
Valve Seat Stainless Steel Heat/Impact Pumps & Valves Nickel & Inconel grades (opens in a new tab)
Condenser Pipes Cu Nickel Alloys Corrosion Heat Exchange & Piping STAVINOX NiCu7 (opens in a new tab) Nickel-Copper Alloy Electrodes
Heat Exchange Tubes Nickel Alloys Corrosion Heat Exchange & Piping STAVINOX NiCu7 (opens in a new tab) Nickel-Copper Alloy Electrodes
Showing 6 of 6 components Confirm the grade with our application engineers before welding
How marine components fail
  1. Seawater corrosion

    Chlorides pitting condenser tubes, tube plates and pump housings, with crevice attack at every flange and joint.

  2. Cavitation & erosion

    Impellers, wear rings and casings hollowed out where the water flashes to vapour and collapses against the metal.

  3. Thermal cycling & fatigue

    Blocks, heads and exhaust parts cracking where they heat and cool again through every watch and every port call.

  4. Dissimilar metals

    Bronze to steel, stainless to carbon steel — joints made on board, and the galvanic cells salt water sets up across them.

Send us the component.
We’ll send the procedure.

Base metal, wear factor and a photograph of the part — an application engineer comes back with the consumable, the parameters and a procedure your crew can run alongside.

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