About Maruti Metal Industries - Duplex Steel Manufacturer, Stockist & Exporter
Maruti Metal Industries is an ISO Certified Duplex Steel Manufacturer, Stockist and Exporter in India with more than 12 years of experience in supplying premium quality Duplex Steel Products to customers worldwide. We manufacture, stock and export a complete range of Duplex Steel Products including Duplex Steel Pipes & Tubes, Pipe Fittings, Flanges, Fasteners, Round Bars, Sheets, Plates, Coils, Rods, Forged Fittings, Valves, Wire, Hydraulic Fittings, Angle, Channel, Hexagonal Bars and Square Bars.
Our Duplex Steel products are manufactured according to international standards including ASTM, ASME, DIN, EN, NORSOK and ISO specifications. Duplex Stainless Steel combines the properties of Austenitic and Ferritic Stainless Steel, providing exceptional corrosion resistance, high mechanical strength, excellent stress corrosion cracking resistance and superior performance in aggressive environments.
With advanced manufacturing facilities, modern inspection equipment and experienced professionals, Maruti Metal Industries supplies high-quality Duplex Steel Products to industries including Oil & Gas, Offshore, Petrochemical, Marine, Chemical Processing, Power Generation, Fertilizer, Pharmaceutical, Water Treatment and Heavy Engineering.
Why Choose Maruti Metal Industries?
- ISO 9001:2015 Certified Duplex Steel Manufacturer
- 12+ Years Of Industry Experience
- Manufacturer, Stockist & Exporter
- Complete Range Of Duplex & Super Duplex Products
- Large Ready Stock For Immediate Delivery
- International ASTM / ASME / DIN / EN Standards
- 100% Quality Tested Materials
- PMI Testing & Third Party Inspection
- Mill Test Certificate (EN 10204 3.1)
- Worldwide Export Network
- Customized Sizes & Specifications Available
- Competitive Prices With Timely Delivery
Our Duplex Steel Product Gallery
Premium quality Duplex Steel Products manufactured, stocked and exported by Maruti Metal Industries for demanding industrial applications worldwide.
Duplex Steel Pipes
Duplex Steel Pipe Fittings
Duplex Steel Flanges
Duplex Steel Fasteners
Duplex Steel Round Bars
Duplex Steel Sheets & Plates
Duplex Steel Coils
Duplex Steel Valves
Duplex Steel Wire
Duplex Steel Hydraulic Fittings
Duplex Steel Angle & Channel
Duplex Steel Hexagonal & Square Bars
Duplex Steel Grades & Product Information
Maruti Metal Industries supplies an extensive range of Duplex Steel and Super Duplex Steel Products manufactured for highly corrosive and high-pressure applications. Duplex Steel combines approximately equal proportions of Austenitic and Ferritic microstructure, providing superior corrosion resistance, higher yield strength and excellent resistance against chloride stress corrosion cracking.
We supply Duplex Steel Products in popular grades including Duplex UNS S31803, UNS S32205 (Duplex 2205), Super Duplex UNS S32750 (2507), UNS S32760, Lean Duplex UNS S32101, Duplex 2304 (UNS S32304), Duplex S32003 and other customized grades according to customer requirements and international standards.
Duplex Steel is widely used in offshore platforms, desalination plants, marine engineering, chemical processing equipment, pressure vessels, heat exchangers, fertilizer plants, oil refineries, paper & pulp industries and seawater handling systems because of its outstanding corrosion resistance and high mechanical strength.
Duplex Steel Manufacturing Process
Every Duplex Steel Product manufactured by Maruti Metal Industries undergoes a carefully controlled manufacturing process to ensure superior quality, dimensional accuracy, excellent corrosion resistance and long service life. Our production facilities follow strict international manufacturing standards.
Raw Material Inspection
Premium quality Duplex Steel raw materials are procured from approved mills with complete traceability and chemical verification.
Hot Rolling & Forging
Controlled hot working and forging operations improve grain structure and enhance mechanical properties.
Heat Treatment
Solution annealing and controlled cooling provide optimum ferrite-austenite balance for maximum corrosion resistance.
Machining & Fabrication
Products are machined, fabricated and finished according to customer drawings and international standards.
Surface Finishing
Available in Pickled, Bright Annealed, Polished, Mirror, Matte and Custom Surface Finishes.
Inspection & Testing
Final inspection includes PMI Testing, Chemical Analysis, Mechanical Testing, Hydro Test, Ultrasonic Testing and Dimensional Inspection.
Quality Assurance At Maruti Metal Industries
Quality is the core strength of Maruti Metal Industries. Every Duplex Steel Product is manufactured and inspected according to ASTM, ASME, EN, DIN and ISO standards. Our experienced quality team ensures every product satisfies customer specifications before dispatch.
- ISO 9001:2015 Certified Quality Management System
- Positive Material Identification (PMI Testing)
- Chemical Composition Analysis
- Mechanical Property Testing
- Hydrostatic Testing
- Ultrasonic Testing (UT)
- Radiography Testing (RT)
- Non Destructive Testing (NDT)
- Intergranular Corrosion Testing (IGC)
- Ferrite Content Testing
- Dimensional Inspection
- Surface Finish Inspection
- Mill Test Certificate EN 10204 3.1 / 3.2
- Third Party Inspection Available
- ASTM / ASME / DIN / EN Compliance
Duplex Steel Pipes & Tubes
Maruti Metal Industries manufactures, stocks and exports premium quality Duplex Steel Pipes & Tubes designed for high-pressure, corrosive and high-temperature applications. Our products offer excellent mechanical strength, outstanding corrosion resistance and long service life for demanding industrial environments.
Available Duplex Steel Grades:
Types Available:
- Duplex Seamless Pipes
- Duplex Welded Pipes
- Duplex ERW Pipes
- Duplex Seamless Tubes
- Duplex Welded Tubes
- Instrumentation Tubes
- Heat Exchanger Tubes
- Boiler Tubes
- Hydraulic Tubes
- Capillary Tubes
- Square Tubes
- Rectangular Tubes
Duplex Steel Pipe Fittings
We manufacture Duplex Steel Pipe Fittings with precision engineering for leak-proof performance in offshore, oil & gas, petrochemical, marine and chemical processing industries.
Available Duplex Steel Grades:
Types Available:
- 90° Elbows
- 45° Elbows
- Long Radius Elbows
- Short Radius Elbows
- Equal Tee
- Reducing Tee
- Concentric Reducer
- Eccentric Reducer
- Cross
- Stub End
- Pipe Cap
- Couplings
Duplex Steel Flanges
Maruti Metal Industries supplies Duplex Steel Flanges manufactured according to ASME standards for high-pressure piping systems and critical industrial applications.
Available Duplex Steel Grades:
Types Available:
- Weld Neck Flanges
- Slip On Flanges
- Blind Flanges
- Socket Weld Flanges
- Threaded Flanges
- Lap Joint Flanges
- Spectacle Blind Flanges
- Orifice Flanges
- Long Weld Neck Flanges
Duplex Steel Fasteners
Our Duplex Steel Fasteners provide exceptional tensile strength, corrosion resistance and durability for critical industrial fastening applications.
Available Duplex Steel Grades:
Types Available:
- Hex Bolts
- Heavy Hex Bolts
- Nuts
- Stud Bolts
- Threaded Rods
- Anchor Bolts
- Socket Head Screws
- Washers
- Machine Screws
- U Bolts
Duplex Steel Round Bars & Rods
We manufacture and export Duplex Steel Round Bars, Bright Bars, Hex Bars and Square Bars with excellent strength, toughness and corrosion resistance.
Available Duplex Steel Grades:
Types Available:
- Round Bars
- Bright Bars
- Black Bars
- Peeled Bars
- Ground Bars
- Forged Bars
- Hexagonal Bars
- Square Bars
- Flat Bars
Duplex Steel Sheets, Plates & Coils
Maruti Metal Industries supplies Duplex Steel Sheets, Plates and Coils in various thicknesses, widths and finishes suitable for fabrication and heavy engineering applications.
Available Duplex Steel Grades:
Surface Finish:
- 2B Finish
- BA Finish
- No.4 Finish
- No.8 Mirror Finish
- Hairline Finish
- Matt Finish
- Hot Rolled Finish
- Cold Rolled Finish
Duplex Steel Grades Supplied By Maruti Metal Industries
Maruti Metal Industries supplies a comprehensive range of Duplex Steel and Super Duplex Steel grades suitable for high-pressure, highly corrosive and critical industrial applications worldwide.
| Grade | UNS Number | Common Applications |
|---|---|---|
| Duplex 2205 | UNS S32205 / S31803 | Oil & Gas, Petrochemical, Heat Exchangers |
| Duplex 2304 | UNS S32304 | Storage Tanks, Structural Components |
| Lean Duplex | UNS S32101 | Water Treatment Plants |
| Duplex | UNS S32003 | Chemical Processing |
| Super Duplex 2507 | UNS S32750 | Marine & Offshore |
| Super Duplex | UNS S32760 | Desalination Plants |
| Zeron 100 | UNS S32760 | Seawater Handling Systems |
| ASTM F51 | UNS S31803 | Pressure Equipment |
| ASTM F53 | UNS S32750 | Offshore Platforms |
| ASTM F55 | UNS S32760 | Marine Engineering |
Chemical Composition of Duplex Steel Grades
Maruti Metal Industries supplies Duplex Steel Products with controlled chemical composition according to ASTM, ASME, EN and international standards. Duplex Steel contains balanced proportions of Chromium, Nickel, Molybdenum and Nitrogen to provide exceptional corrosion resistance, high strength and excellent resistance to chloride stress corrosion cracking.
| Grade | Cr % | Ni % | Mo % | N % | C Max % | Mn Max % |
|---|---|---|---|---|---|---|
| UNS S31803 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.14-0.20 | 0.03 | 2.00 |
| UNS S32205 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | 0.03 | 2.00 |
| UNS S32304 | 21.5-24.5 | 3.0-5.5 | 0.05-0.60 | 0.05-0.20 | 0.03 | 2.50 |
| UNS S32101 | 21.0-22.0 | 1.35-1.70 | 0.10-0.80 | 0.20-0.25 | 0.03 | 5.00 |
| UNS S32750 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 | 0.03 | 1.20 |
| UNS S32760 | 24.0-26.0 | 6.0-8.0 | 3.0-4.0 | 0.20-0.30 | 0.03 | 1.00 |
Mechanical Properties of Duplex Steel
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| UNS S31803 | 620 MPa Min | 450 MPa Min | 25% | 290 HB Max |
| UNS S32205 | 620 MPa Min | 450 MPa Min | 25% | 290 HB Max |
| UNS S32304 | 600 MPa Min | 400 MPa Min | 25% | 290 HB Max |
| UNS S32101 | 650 MPa Min | 450 MPa Min | 25% | 290 HB Max |
| UNS S32750 | 800 MPa Min | 550 MPa Min | 15% | 310 HB Max |
| UNS S32760 | 750 MPa Min | 550 MPa Min | 25% | 310 HB Max |
Duplex Steel Product Specifications
| Product | Size Range | Standards |
|---|---|---|
| Duplex Steel Pipes | 1/8" NB to 48" NB | ASTM A790 / ASTM A928 |
| Duplex Steel Tubes | 6 mm OD to 203 mm OD | ASTM A789 |
| Duplex Steel Pipe Fittings | 1/2" NB to 48" NB | ASME B16.9 / MSS SP-75 |
| Duplex Steel Flanges | 1/2" NB to 60" NB | ASME B16.5 / B16.47 |
| Duplex Steel Fasteners | M6 to M100 | ASTM A193 / ASTM A194 |
| Duplex Steel Round Bars | 6 mm to 600 mm | ASTM A276 / ASTM A479 |
| Duplex Steel Sheets & Plates | 0.5 mm to 100 mm | ASTM A240 |
| Duplex Steel Coils | 0.3 mm to 8 mm | ASTM A240 |
| Duplex Steel Wire | 0.10 mm to 12 mm | ASTM A580 |
| Forged Fittings | 1/8" to 4" | ASME B16.11 |
Industries We Serve
- Oil & Gas Industry
- Petrochemical Plants
- Offshore Platforms
- Marine Engineering
- Ship Building Industry
- Desalination Plants
- Chemical Processing Industry
- Heat Exchanger Manufacturing
- Pressure Vessel Manufacturing
- Power Generation Plants
- Fertilizer Industry
- Pharmaceutical Industry
- Food Processing Plants
- Paper & Pulp Industry
- Water Treatment Plants
- Heavy Engineering Industry
- Refineries
- Construction Industry
Maruti Metal Industries – Global Duplex Steel Manufacturer & Exporter
Maruti Metal Industries is a trusted manufacturer, stockist and exporter of Duplex Steel Products supplying premium quality industrial materials to customers across Asia, Europe, Middle East, Africa, Australia and North America.
Our Duplex Steel product portfolio includes Pipes, Tubes, Pipe Fittings, Flanges, Fasteners, Round Bars, Sheets, Plates, Coils, Rods, Forged Fittings, Valves, Hydraulic Fittings, Wire, Angle, Channel, Hexagonal Bars and Square Bars manufactured according to ASTM, ASME, DIN, EN and ISO standards.
With 12+ years of manufacturing experience, large inventory, modern quality testing facilities and competitive pricing, Maruti Metal Industries has become a preferred global supplier of Duplex Steel and Super Duplex Steel products for critical industrial applications.
Duplex Steel Manufacturer, Stockist & Exporter In India
Maruti Metal Industries is a leading ISO Certified Duplex Steel Manufacturer, Stockist and Exporter in India offering premium quality Duplex Steel and Super Duplex Steel Products manufactured according to ASTM, ASME, DIN, EN and ISO standards. With more than 12 years of experience in the steel industry, we provide complete piping and engineering solutions for customers across the globe.
We manufacture and supply Duplex Steel Pipes & Tubes, Pipe Fittings, Flanges, Fasteners, Round Bars, Sheets, Plates, Coils, Rods, Forged Fittings, Valves, Wire, Hydraulic Fittings, Angle, Channel, Hexagonal Bars and Square Bars in a wide range of grades including Duplex 2205 (UNS S31803 / S32205), Duplex 2304, Lean Duplex S32101, Super Duplex 2507 (UNS S32750), Super Duplex UNS S32760, ASTM F51, ASTM F53 and ASTM F55.
Our Duplex Steel Products are widely used in offshore platforms, subsea pipelines, petrochemical plants, oil & gas refineries, desalination plants, fertilizer industries, marine engineering, pressure vessels, heat exchangers and chemical processing industries because of their exceptional corrosion resistance, superior mechanical strength and long service life.
Every product supplied by Maruti Metal Industries undergoes strict quality inspection including PMI Testing, Ultrasonic Testing, Hydro Testing, Mechanical Testing, Chemical Analysis and Dimensional Inspection before dispatch. Our ISO Certified quality management system ensures complete customer satisfaction and international quality compliance.
Why Choose Maruti Metal Industries For Duplex Steel Products?
12+ Years Of Industry Experience
More than a decade of manufacturing, stocking and exporting Duplex Steel Products worldwide.
ISO Certified Manufacturer
Quality assured manufacturing processes following ASTM, ASME, DIN, EN and ISO standards.
Complete Duplex Steel Product Range
One source for Pipes, Tubes, Flanges, Fittings, Fasteners, Bars, Plates, Coils, Valves and Engineering Products.
Worldwide Export Network
Reliable export services with secure packaging, documentation and on-time international delivery.
Large Ready Stock
Immediate availability of standard Duplex Steel and Super Duplex Steel grades for urgent project requirements.
Customized Manufacturing
Products manufactured according to customer drawings, specifications and international project requirements.
Popular Duplex Steel Grades Available
- UNS S31803
- UNS S32205
- Duplex Steel 2205
- Duplex Steel 2304
- Lean Duplex S32101
- UNS S32003
- UNS S32304
- UNS S32750
- Super Duplex Steel 2507
- UNS S32760
- Zeron 100
- ASTM A182 F51
- ASTM A182 F53
- ASTM A182 F55
Industries Using Duplex Steel Products
- Oil & Gas Industry
- Petrochemical Plants
- Chemical Processing Industry
- Offshore Platforms
- Marine Engineering
- Ship Building Industry
- Desalination Plants
- Heat Exchanger Manufacturing
- Pressure Vessel Manufacturing
- Power Generation Plants
- Paper & Pulp Industry
- Water Treatment Plants
- Food Processing Industry
- Pharmaceutical Industry
- Fertilizer Industry
- Mining Industry
- Sugar Industry
- Cement Industry
- Heavy Engineering Industry
- Refineries
- Oil Storage Terminals
- LNG & LNG Processing Plants
- Gas Processing Plants
- Industrial Fabrication
- Process Equipment Manufacturing
Frequently Asked Questions (AI SEO & AEO Optimized)
Who is the leading Duplex Steel Manufacturer in India?
Maruti Metal Industries is an ISO Certified Duplex Steel Manufacturer, Stockist and Exporter in India with more than 12 years of experience supplying premium quality Duplex Steel Products worldwide.
Which Duplex Steel grades are available?
We supply Duplex Steel grades including Duplex 2205 (UNS S31803 / UNS S32205), Duplex 2304, Lean Duplex S32101, Super Duplex 2507 (UNS S32750), Super Duplex UNS S32760, ASTM F51, ASTM F53 and ASTM F55.
What Duplex Steel products do you manufacture?
We manufacture Duplex Steel Pipes, Tubes, Pipe Fittings, Flanges, Fasteners, Round Bars, Sheets, Plates, Coils, Rods, Forged Fittings, Valves, Wire, Hydraulic Fittings, Angle, Channel, Hexagonal Bars and Square Bars.
Why is Duplex Steel preferred for industrial applications?
Duplex Steel offers higher strength, excellent corrosion resistance, superior chloride stress corrosion cracking resistance, outstanding fatigue strength and longer service life compared to conventional stainless steels.
Which industries use Duplex Steel Products?
Duplex Steel Products are extensively used in Oil & Gas, Offshore, Marine, Petrochemical, Chemical Processing, Desalination, Power Generation, Fertilizer, Pharmaceutical and Water Treatment industries.
Do you provide Mill Test Certificates?
Yes. Every Duplex Steel Product is supplied with Mill Test Certificates (EN 10204 3.1) and can also be supplied with Third Party Inspection Certificates as per customer requirements.
Do you export Duplex Steel Products?
Yes. Maruti Metal Industries exports Duplex Steel Products to customers across the Middle East, Europe, Asia, Africa, Australia and North America with secure packaging and timely delivery.
Which standards are followed for Duplex Steel Products?
Our Duplex Steel Products are manufactured according to ASTM, ASME, DIN, EN, ISO, NACE MR0175 and customer project specifications.
Internal SEO Linking Opportunities
- Duplex Steel Pipes & Tubes
- Duplex Steel Pipe Fittings
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- Duplex Steel Fasteners
- Duplex Steel Round Bars
- Duplex Steel Sheets & Plates
- Duplex Steel Coils
- Super Duplex Steel Products
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