Marine & Offshore – Hex Bars (Duplex / SS 316L) | Inox Steel India
Inox Steel India is a manufacturer, supplier, and exporter of marine and offshore grade hex bars, supplying corrosion-resistant hexagonal bar stock for seawater-exposed, chloride-rich, and offshore operating environments across India, GCC countries, the Middle East, Africa, Europe, and the Americas.
Hex bars used in marine and offshore applications are selected for high corrosion resistance, mechanical strength, and long-term reliability under aggressive service conditions. Duplex stainless steel and SS 316L hex bars are widely used for marine hardware, offshore fittings, fasteners, connectors, and structural components.
Inox Steel India supplies marine-grade hex bars in Duplex Stainless Steel (S31803 / S32205) and Stainless Steel 316 / 316L, manufactured and processed in compliance with ASTM A276 / ASTM A479 and other applicable international standards.
Seawater service is one of the most aggressive environments for metals due to:
Standard carbon steels fail rapidly in such conditions. Therefore, austenitic stainless steels and duplex stainless steels are preferred for their passive corrosion-resistant oxide layer and superior mechanical performance.
Flat bars play a crucial role in marine and offshore fabrication due to their flat geometry and load distribution capability. They are widely used for:
Flat bars offer excellent weld area, ease of fabrication, and compatibility with heavy-duty marine structures.
The most commonly used materials for marine and offshore flat bars include:
These materials ensure long service life, reduced maintenance, and improved safety in offshore environments.
In India, marine and offshore flat bars are widely used across Mumbai, Navi Mumbai, Kochi, Chennai, Visakhapatnam, and Kandla, supporting shipyards, ports, offshore EPC contractors, and coastal infrastructure projects.
Globally, demand comes from offshore oil & gas platforms, desalination plants, shipbuilding yards, and coastal engineering projects across GCC countries, Europe, Africa, and Southeast Asia.
Flat bars supplied by Inox Steel India are extensively used in marine and offshore fabrication, where components are exposed to continuous seawater contact, chloride attack, humidity, and cyclic mechanical stress.
| Application Area | Functional Role of Flat Bars |
|---|---|
| Offshore Platforms | Structural supports, frames, walkways |
| Shipbuilding | Brackets, stiffeners, reinforcements |
| Coastal Infrastructure | Port structures, jetties, marine bridges |
| Marine Equipment | Mounting plates, bases, structural frames |
| Desalination Plants | Structural and support components |
Flat bars are preferred because they provide excellent surface contact for welding, strong load distribution, and ease of integration with marine structures.
Choosing the correct grade is critical for seawater service performance:
Duplex and marine-grade stainless steels offer:
These properties make SS 316 and duplex flat bars the preferred materials for long-term seawater service.
Custom cut lengths are widely used to reduce offshore installation time and minimize on-site cutting.
Inox Steel India supplies marine-grade flat bars with controlled chemistry and consistent quality, ensuring reliable fabrication and long-term corrosion resistance.
Marine and offshore environments demand materials that can withstand continuous seawater exposure, chloride attack, and harsh operating conditions. Inox Steel India supplies marine-grade stainless steel and duplex flat bars engineered for long-term corrosion resistance, high strength, and structural reliability.
Key Advantages:
Our materials are selected to minimize maintenance, extend service life, and ensure safety in marine and offshore structures.
Marine and offshore flat bars are supplied with corrosion-protective and export-grade packaging:
Packing Details:
Export Destinations:
UAE · Saudi Arabia · Qatar · Europe · Africa · Southeast Asia · Americas
Whether you need stainless steel flat bars for marine structures, duplex flat bars for offshore platforms, or export-grade seawater-resistant materials, our team will assist with grade selection, inspection, and delivery planning.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in, steel@inoxsteelindia.in
+91 9930796690
Yes. Duplex and SS 316L are widely used for seawater and marine atmospheric exposure when properly specified and processed. Yes, ferrite content testing can be provided on request to ensure phase balance. Yes, custom cut lengths are supplied to improve fabrication and machining efficiency. Yes, heat number traceability and EN 10204 certification are maintained. Are these hex bars suitable for seawater immersion?
Is ferrite content controlled for duplex grades?
Are custom cut lengths available for offshore projects?
Is certification maintained after cutting and finishing?
Inox Steel India supplies marine-grade stainless steel and duplex flat bars for seawater and offshore applications. Certified materials with PAN India & export supply.