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Home > Our Products > Stainless Steel Plates >  Support Pages > Stainless Plates for Marine & Saltwater Use

Stainless Plates for Marine & Saltwater Use

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Stainless Steel Plates for Marine & Saltwater Applications

Hindustan Steel Corporation is a trusted supplier of corrosion-resistant stainless steel plates for marine, coastal, offshore, and shipbuilding environments. From SS 316L to Super Duplex S32750, our plates are engineered for long-lasting performance in high-salinity and aggressive chloride-rich conditions.

What Makes Stainless Steel Suitable for Marine Use?

Marine-grade stainless steel must:

  • Withstand chloride attack, salt fog, and pitting
  • Maintain mechanical strength despite moisture exposure
  • Be resistant to crevice corrosion and erosion
  • Perform reliably in submerged and splash zones
  • Allow weldability, shaping, and maintenance

Common Marine Applications

We supply plates for:

  • Ship hull cladding and interiors
  • Seawater desalination plants
  • Offshore oil & gas platforms
  • Coastal structural steelwork
  • Port terminals, marine ladders, gangways
  • Chemical storage tanks near sea
  • Fishery, aquaculture, and marine equipment

Mechanical Performance in Marine Conditions

Our stainless plates offer:

  1. High yield and tensile strength
  2. Resistance to chloride-induced stress cracking
  3. Long lifecycle in submerged/splash/UV zones
  4. Non-magnetic and low-maintenance performance
  5. Suitable for TIG/MIG welding in dockyard

Grades with Superior Corrosion Resistance

Grade Application Chloride Resistance Notes
SS 316L Standard marine Good Molybdenum alloyed
SS 904L Desalination, ports Excellent Resistant to sulfuric acid and chlorides
Duplex S32205 Offshore structures Very High High strength + pitting resistance
Super Duplex S32750 Seawater intakes Extreme High PREN value (≥40)

International Standards Followed

  • ASTM A240 / ASME SA240
  • EN 10088-2, EN 10028-7
  • PED 2014/68/EU compliant
  • NACE MR0175 / ISO 15156 for sour service
  • Lloyds Register / DNV / ABS certified (on request)

Thickness & Size Range for Marine Plates

  • Thickness: 2 mm to 100 mm
  • Width: up to 2500 mm
  • Length: up to 6000 mm
  • Standard finishes: No.1 (HR), 2B, 2D, and brushed
  • Coil-cut, edge-trimmed, and custom profiles available

Surface Finish & Cleaning for Seawater Exposure

  • 2B / No.4 brushed finish for ship interiors
  • No.1 / HR for heavy-duty structural parts
  • Pickled and passivated to prevent contamination
  • Polished surface (Ra <0.5 μm) for critical areas
  • Compatible with electropolishing and marine paints

CNC Cutting, Shearing & Machining Options

  • Waterjet and laser cutting available
  • Edge beveling and radius forming
  • Marine flange cutting & perforated screens
  • Plasma profiling for offshore brackets and plates
  • All plates are ID marked, traceable, and labeled

Why Marine Buyers Choose Hindustan Steel

  • Salt spray-tested and third-party verified
  • Serving clients in shipyards, desal plants, ports
  • PED, NACE, ISO, ASTM certifications
  • Rapid dispatch + packaging with PVC coating & anti-rust wrap
  • Expert marine project support & compliance documentation

Global Export for Marine Projects

We export marine-grade SS plates to:

  • UAE, Oman, Qatar, Bahrain (for seawater plants, platforms)
  • Singapore, Vietnam, Malaysia (shipyards, desalination)
  • South Africa, Nigeria, Egypt (coastal terminals)
  • India: Chennai, Kochi, Goa, Mumbai ports

All export shipments include:

  • Waterproof wrapping
  • PVC film / rust preventive oil
  • Edge protectors + wooden pallets
  • Grade + thickness embossing
  • Complete MTCs + country-specific compliance

Choosing the Right Grade for Marine Use

  • SS 316L – best for light marine, ship interiors, dock railings
  • SS 904L – high-chloride zones, seawater tanks, desalination units
  • Duplex 2205 / S32750 – splash zone, mooring structure, submerged hardware
  • Always check pitting resistance equivalent number (PREN) before selection

Marine Certifications & Test Reports Provided

  • Mill Test Certificate (EN 10204 3.1 / 3.2)
  • NACE / PMI / IGC / Pitting Corrosion Test
  • Salt Spray (ASTM B117)
  • UT, Flattening, and Visual inspection
  • Third-party marine approvals on demand

FAQs for Stainless Plates for Marine & Saltwater Use

Standard SS 304 may corrode. Marine-grade 316L or 904L resists pitting, crevice corrosion, and chloride attack.

Yes, with proper grade selection like Duplex or 904L, they can withstand submerged and tidal conditions.

Yes. We offer CNC cutting and No.4 brushed polishing for railing and decorative ship interiors.

Yes. We export to UAE, Singapore, South Africa, Vietnam, and supply custom documentation and seaworthy packing.

Get a Quote for Marine Stainless Plate Supply

Looking for a reliable marine stainless plate exporter?
We offer:

  • Immediate stock availability
  • Custom sizing and finishing
  • Fast delivery to shipyards and coastal projects
  • Competitive rates + full documentation
Request a Callback

Call Now

+91-22-66159018
+91-9820944724

Email

sales@hindustansteel.com hindustansteel1@gmail.com

Visit Us

390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India

Internal Links

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Manufacturing & Capability

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Export

We Ship Globally – Fast & Certified
Serving buyers in UAE, Saudi Arabia, Vietnam, South Africa, and across India. All plates come with export documents and quality reports.

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FAQs

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Blog

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Supporting Pages

Access essential resources and documentation to simplify your decision-making, specification, and compliance needs:

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Call Now

+91-22-66159018
+91-9820944724

Email

sales@hindustansteel.com hindustansteel1@gmail.com