Manufacturer, Supplier & Exporter of Marine Grade Round Bar
Riddhi Siddhi Impex is a leading manufacturer and supplier of Marine Grade Round Bars in India, providing high-quality, corrosion-resistant bars suitable for harsh marine environments. These bars are engineered to withstand saline water, moisture, and chemical exposure, making them ideal for shipbuilding, offshore structures, docks, and coastal installations..
Marine Grade Round Bars are primarily made from stainless steel grades like 316, 316L, 317L, Duplex 2205, and Super Duplex 2507, which offer superior corrosion resistance and mechanical strength. These materials are carefully selected and heat-treated to provide maximum durability and longevity, ensuring minimal maintenance even under aggressive marine conditions.
Riddhi Siddhi Impex manufactures these bars using advanced forging, rolling, and heat treatment processes. Each batch undergoes strict quality checks including chemical analysis, tensile testing, hardness testing, and non-destructive inspection. This ensures compliance with international standards like ASTM, EN, and JIS, providing reliable performance in demanding environments...
Marine Grade Round Bars exhibit excellent mechanical properties, including high tensile strength, yield strength, and impact resistance. They are designed to resist pitting, crevice corrosion, and stress corrosion cracking, making them suitable for both static and dynamic marine applications. Their elongation and hardness are optimized for structural integrity and long-term durability...
Riddhi Siddhi Impex has a wide distribution network across India, supplying Marine Grade Round Bars to major industrial and port cities such as Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru, Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, Rajpipla. The company ensures timely delivery and ready stock availability for industrial requirements..
Marine Grade Round Bar – Technical Details
Specification
| Property | Details |
|---|---|
| Product Name | Marine Grade Round Bar |
| Material Grades | SS 316, SS 316L, SS 317L, Duplex 2205, Super Duplex 2507 |
| Diameter Range | 6 mm – 300 mm |
| Length | 1 Meter – 6 Meter / Custom Lengths |
| Finish | Hot Rolled, Cold Drawn, Polished, Peeled & Ground |
| Standards | ASTM, EN, JIS, DIN, IS |
| Applications | Shipbuilding, Offshore Structures, Marine Engineering, Coastal Construction |
Chemical Composition
| Element | SS 316 / 316L (%) | Duplex 2205 (%) | Super Duplex 2507 (%) |
|---|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.03 |
| Chromium (Cr) | 16 – 18 | 21 – 23 | 24 – 26 |
| Nickel (Ni) | 10 – 14 | 4.5 – 6.5 | 6 – 8 |
| Molybdenum (Mo) | 2 – 3 | 2 – 3 | 3 – 5 |
| Manganese (Mn) | ≤ 2 | ≤ 2 | ≤ 2 |
| Iron (Fe) | Balance | Balance | Balance |
| Nitrogen (N) | - | 0.08 – 0.20 | 0.24 – 0.32 |
Mechanical Properties
| Property | SS 316 / 316L | Duplex 2205 | Super Duplex 2507 |
|---|---|---|---|
| Tensile Strength | 515 – 700 MPa | 620 – 850 MPa | 750 – 950 MPa |
| Yield Strength | 205 – 290 MPa | 450 – 550 MPa | 620 – 750 MPa |
| Elongation | 40% minimum | 25 – 35% | 18 – 25% |
| Hardness | ≤ 95 HRB | ≤ 310 HB | ≤ 360 HB |
Dimension Chart
| Diameter (mm) | Weight (kg/m) |
|---|---|
| 10 | 0.62 |
| 12 | 0.89 |
| 16 | 1.58 |
| 20 | 2.47 |
| 25 | 3.85 |
| 32 | 6.31 |
| 40 | 9.86 |
| 50 | 15.41 |
| 63 | 24.79 |
| 75 | 36.77 |
Equivalent Grades
| Material | Equivalent Standard |
|---|---|
| SS 316 | AISI 316 / ASTM A276 |
| SS 316L | AISI 316L / ASTM A276 |
| Duplex 2205 | EN 1.4462 / UNS S32205 |
| Super Duplex 2507 | EN 1.4410 / UNS S32750 |
Equivalent Standards
| Standard | Description |
|---|---|
| ASTM A276 | Stainless Steel Bars |
| EN 10088 | European Standard Stainless Steel |
| JIS G4303 | Japanese Stainless Steel Standard |
| DIN 17440 | German Stainless Steel Standard |
Other Types
| Type |
|---|
| SS 304 Marine Round Bar |
| SS 316 / 316L Marine Round Bar |
| Duplex 2205 Marine Round Bar |
| Super Duplex 2507 Marine Round Bar |
| Polished / Peeled Marine Round Bar |
Marine Grade Round Bars are specifically engineered to resist saltwater corrosion, oxidation, and chemical degradation. This ensures that components maintain their structural integrity and aesthetics even in prolonged exposure to coastal or offshore environments. These properties significantly reduce maintenance costs over the lifecycle of marine structures.
Frequently Asked Questions (FAQs)
- Q1: What are Marine Grade Round Bars used for?
- They are used in shipbuilding, offshore platforms, seawater piping, and coastal infrastructure requiring corrosion resistance.
- Q2: Are custom sizes available?
- Yes, Riddhi Siddhi Impex supplies custom diameters, lengths, and finishes according to client requirements.
- Q3: Which grades are best for saltwater exposure?
- SS 316L, Duplex 2205, and Super Duplex 2507 offer excellent resistance to seawater corrosion and stress.
- Q4: Do you provide material test certificates?
- Yes, all Marine Grade Round Bars come with MTCs as per ASTM / EN standards.
Cities we have supplied our products to
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Countries we have supplied our products to
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