vanzari@infinitrade-romania.ro
+40 371 232 404|Mon - Fri: 08:00 - 16:30 (Romania time)
Infinitrade Romania – industrial equipment supplier in Romania

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    Equipment for Shipbuilding

    Marine applications expose equipment to corrosive seawater, where bronze, CuNi alloys or duplex stainless steel hold up better than carbon steel, and critical components require certification from a classification society (Lloyd's, DNV, BV). We quote marine pumps, deck hydraulic systems, bronze valves, marine ventilation equipment and level and pressure sensors. Send us the flow rate, pressure, fluid and the vessel's classification society.

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    Applications

    • Seawater pumping systems (ballast, cooling)
    • Deck hydraulics (winches, cranes, capstans)
    • Onboard sanitary and wastewater systems
    • Ventilation and air conditioning of vessel spaces
    • Marine fire-fighting systems

    Equipment we supply for shipbuilding and marine

    • Marine pumpsCentrifugal and self-priming bronze/CuNi pumps for seawater
    • Deck hydraulic systemsHydraulic power units, cylinders and valves for deck equipment
    • Bronze marine valvesBall and butterfly valves, certified Lloyd's/DNV/BV
    • Marine ventilation equipmentMarine-certified fans and dampers
    • Level and pressure sensorsCertified marine instruments for tanks and systems

    Brands often requested

    • KSB
    • Grundfos
    • Parker
    • ARI Armaturen
    • Dräger

    Frequently asked questions

    Why are bronze or CuNi used for pumps and valves in marine applications?

    Seawater is extremely corrosive to carbon steel and even to some standard stainless steels (risk of pitting corrosion and cracking in the presence of chlorides). Bronze and copper-nickel alloys (CuNi, usually 90/10) resist seawater corrosion well and, in addition, CuNi has natural anti-biofouling properties that reduce the build-up of shells and algae on internal surfaces, keeping the hydraulic efficiency of the piping in the long term. For components under higher mechanical stress (shafts, pump impellers), duplex stainless steel is an alternative with superior mechanical strength and good chloride resistance.

    What certifications must equipment for a vessel have (Lloyd's, DNV, BV)?

    Classification societies (Lloyd's Register, DNV, Bureau Veritas) inspect and certify critical onboard equipment - pumps, valves, fire-fighting systems - under their own class rules, which often go beyond standard industrial requirements through additional vibration, shock and inclined-operation tests. The class certificate is mandatory for approval of the vessel and must correspond exactly to the society with which the vessel is registered - a certificate from another society, even if technically equivalent, may not be accepted directly. Check with the shipyard or the shipowner which classification society applies.

    Which hydraulic systems are used for deck equipment (winches, cranes)?

    Deck hydraulic systems work in harsh conditions - exposure to salt water, vibration from vessel movement and variable temperatures - so components (cylinders, seals, valves) must be properly protected against corrosion, usually with special coatings or materials resistant to the marine environment. Sizing the hydraulic power unit depends on the maximum load to be lifted or pulled, the required operating speed and the number of simultaneous functions. For critical safety equipment (anchor, towing), redundancy of the hydraulic system is often a requirement of the classification society, not just a recommendation.

    Which pumps are used for ballast and seawater cooling systems?

    Ballast pumps must handle high flow rates at moderate pressures, with tolerance to seawater that may contain sand or fine sediment, especially in ports. Self-priming centrifugal pumps in bronze, or with a cast iron casing with anti-corrosion lining, are the standard choice for this duty, and for the cooling circuits of the main engines the material must also withstand the discharge temperature of the cooling water. Also check the class society's redundancy requirements (usually a minimum of two independent ballast pumps) before fixing the final configuration.

    What should we send for a quotation for equipment for a marine or shipyard project?

    For pumps and valves: the flow rate, pressure, fluid (seawater, fresh water, fuel), the material required by the specification and the classification society with which the vessel is registered. For deck hydraulics: the maximum load, the operating speed and the existing hydraulic diagram. Lead times for certified marine equipment can be longer than for standard industrial equipment (made to order, usually 1–4 weeks; it may take longer depending on brand and specifications), because of the additional documentation required by the class society - for projects with a tight deadline, let us know early so that we can check certification and delivery options.

    Other industries we supply

    Updated: 2026-11-12