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.
Marine and offshore grade hex bars are solid hexagonal bars manufactured from corrosion-resistant stainless steel and duplex alloys, designed to perform in seawater, coastal, offshore, and high-humidity environments.
Compared to standard stainless steel grades, Duplex stainless steel offers higher strength and superior resistance to pitting, crevice corrosion, and stress corrosion cracking, while SS 316L provides excellent general corrosion resistance with good weldability.
These hex bars are typically supplied in solution-annealed condition to ensure optimal corrosion resistance and mechanical properties.
Hex bars are converted into marine and offshore components through machining and forging operations, followed by inspection and assembly.
Typical Processing Route:
These characteristics ensure durability, safety, and reduced maintenance in marine and offshore installations.
Hex bars for marine and offshore applications are commonly supplied in:
Material selection depends on chloride concentration, operating temperature, and mechanical load.
When selecting hex bars for marine or offshore use, the following parameters should be evaluated:
Correct selection ensures safe and reliable performance in harsh marine environments.
In India, marine and offshore grade hex bars are widely used by shipyards, offshore fabricators, coastal infrastructure projects, and marine equipment manufacturers, particularly for ports, jetties, offshore platforms, and marine fasteners.
Export demand is driven by offshore oil & gas, marine engineering, and coastal infrastructure projects requiring high-integrity corrosion-resistant materials.
Marine- and offshore-grade hex bars supplied by Inox Steel India are engineered for chloride-rich, seawater-exposed, and offshore operating conditions where corrosion resistance, mechanical strength, and service reliability are critical. Duplex stainless steel and SS 316L hex bars are selected based on environment severity, load conditions, and lifecycle requirements.
Hex bars for marine and offshore applications are supplied to controlled tolerances suitable for machining and assembly.
(Refer to standard hex bar sizes in mm PDF and hex bar size chart in mm India for nominal AF dimensions.)
Weights are calculated on nominal AF size and material density.
| AF Size (mm) | Approx. Weight (kg/m) |
|---|---|
| 10 | 0.68 |
| 16 | 1.74 |
| 20 | 2.72 |
| 25 | 4.25 |
| 30 | 6.11 |
| 40 | 10.86 |
Indicative values; actual weight varies by grade and finish.
Pricing depends on:
Marine and offshore grades typically carry a premium due to alloy content and inspection requirements.
HSN Code: 7222
(For stainless steel bars and rods)
Marine & offshore hex bars are inspected for corrosion resistance and service integrity.
Inox Steel India supplies marine- and offshore-grade hex bars with controlled metallurgy, verified corrosion resistance, and application-specific processing for long-term service in aggressive environments. Production, heat treatment, and inspections are aligned to offshore and marine standards to ensure reliability and traceability.
Key supply features:
Marine & offshore grade hex bars are supplied to:
Material selection is aligned with chloride exposure, pressure, temperature, and lifecycle requirements.
Hex bars for marine and offshore applications are packed to protect corrosion-resistant surfaces and dimensional integrity:
Dispatch supported through JNPT (Mumbai), Mundra, and Hazira ports for export shipments.
Marine & Offshore Hex Bars Manufacturer & Supplier | Duplex & SS 316L | Inox Steel India
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?
Marine and offshore grade hex bars in Duplex S31803/S32205 and SS 316L for seawater and offshore applications. Certified supply by Inox Steel India.