Blind Flanges – Duplex & Super Duplex | Duplex Blind Flanges Manufacturer, Supplier & Exporter in India | Maruti International

Duplex & Super Duplex Blind Flanges Manufacturer in India

Maruti International is a leading Duplex Blind Flanges Manufacturer in India, Super Duplex Blind Flanges Supplier in India, and globally recognized Blind Flanges Exporter in India, delivering premium-quality flange solutions for highly corrosive and demanding industrial environments. Our Duplex and Super Duplex Blind Flanges are manufactured using advanced forging and machining technologies to provide exceptional mechanical strength, superior corrosion resistance, excellent dimensional accuracy, and long-term operational reliability.

As a trusted Duplex Blind Flanges Exporter, Maruti International supplies high-performance products to industries across domestic and international markets. We cater to sectors including oil & gas, offshore, petrochemical, marine, chemical processing, desalination, pulp & paper, pharmaceuticals, power generation, water treatment, fertilizers, and heavy engineering.

Manufactured according to international specifications including ASTM, ASME, ANSI, DIN, EN, BS, JIS, and ISO standards, our Duplex and Super Duplex Blind Flanges are designed to withstand aggressive environments, high pressures, elevated temperatures, and chloride-rich conditions.

Maruti International has established itself as a dependable Duplex Stainless Steel Blind Flanges Supplier in Mumbai and a prominent Super Duplex Blind Flanges Exporter from India, serving clients throughout Asia, Europe, the Middle East, Africa, North America, South America, and Oceania.

What are Duplex & Super Duplex Blind Flanges?

Blind Flanges are solid circular flanges manufactured without a bore opening and are primarily used to seal the ends of pipelines, valves, pressure vessels, pumps, and process equipment. They facilitate future expansion, maintenance, inspection, pressure testing, and system isolation.

Duplex Blind Flanges are manufactured from Duplex Stainless Steel grades possessing a balanced microstructure composed of ferrite and austenite phases. This unique combination offers significantly higher strength and corrosion resistance compared to conventional stainless steel materials.

Super Duplex Blind Flanges contain increased levels of chromium, molybdenum, and nitrogen, providing superior resistance to chloride-induced corrosion, pitting, crevice corrosion, and stress corrosion cracking.

These flanges are particularly suitable for applications involving seawater, aggressive chemicals, acids, offshore installations, and highly corrosive industrial processes.

Maruti International manufactures premium-quality ASTM A182 Duplex Blind Flanges and ASTM A182 Super Duplex Blind Flanges with precise tolerances and outstanding performance capabilities.

Duplex Blind Flanges Exporter in India

Maruti International is a renowned Duplex Blind Flanges Exporter in India, supplying premium-quality products worldwide.

We manufacture and export:

• Duplex S31803 Blind Flanges

• Duplex S32205 Blind Flanges

• Duplex F51 Blind Flanges

• Duplex F60 Blind Flanges

• Super Duplex S32750 Blind Flanges

• Super Duplex S32760 Blind Flanges

• ASTM A182 F51 Blind Flanges

• ASTM A182 F53 Blind Flanges

• ASTM A182 F55 Blind Flanges

• Forged Duplex Blind Flanges

• Raised Face Duplex Blind Flanges

• Flat Face Duplex Blind Flanges

• RTJ Duplex Blind Flanges

• Super Duplex Forged Blind Flanges

• ASME B16.5 Duplex Blind Flanges

As a trusted Duplex Stainless Steel Blind Flanges Manufacturer in India, we ensure stringent quality control procedures and international compliance throughout production.

Features of Duplex & Super Duplex Blind Flanges

Maruti International manufactures Duplex and Super Duplex Blind Flanges with advanced engineering expertise.

Key Features

• Outstanding corrosion resistance

• Superior pitting resistance

• Excellent crevice corrosion resistance

• Exceptional chloride resistance

• High tensile strength

• Superior yield strength

• Excellent fatigue resistance

• Outstanding toughness

• Excellent impact resistance

• Superior resistance to stress corrosion cracking

• Long operational lifespan

• Excellent dimensional accuracy

• Smooth machined surface finish

• Superior pressure-bearing capability

• Excellent oxidation resistance

• Leak-proof sealing performance

• Low maintenance requirements

• Excellent weldability

• High structural integrity

• Manufactured according to international standards

Advantages of Duplex & Super Duplex Blind Flanges

Superior Corrosion Resistance

Duplex and Super Duplex stainless steels provide exceptional resistance to seawater, chlorides, acids, and aggressive process chemicals.

Excellent Mechanical Strength

These materials possess almost twice the yield strength of conventional austenitic stainless steels.

Enhanced Chloride Resistance

Ideal for marine, offshore, and desalination environments.

Long Service Life

Superior corrosion resistance significantly extends service life and reduces replacement frequency.

High Pressure Capability

Designed to perform efficiently under extreme pressure and temperature conditions.

Reduced Maintenance Costs

Outstanding durability minimizes downtime and maintenance expenses.

Reliable Sealing

Blind flanges offer secure closure and leak-proof isolation for industrial piping systems.

Cost-Effective Performance

Their durability and longevity provide excellent long-term value.

Duplex & Super Duplex Blind Flanges Specifications

Maruti International manufactures Duplex and Super Duplex Blind Flanges in numerous configurations.

Material Grades

Duplex Stainless Steel

• UNS S31803

• UNS S32205

• Duplex 2205

• ASTM A182 F51

• ASTM A182 F60

Super Duplex Stainless Steel

• UNS S32750

• UNS S32760

• Super Duplex 2507

• ASTM A182 F53

• ASTM A182 F55

Standards

• ASTM A182

• ASME B16.5

• ASME B16.47

• ANSI

• DIN

• EN

• BS

• ISO

• JIS

Pressure Ratings

• Class 150

• Class 300

• Class 400

• Class 600

• Class 900

• Class 1500

• Class 2500

Size Range

• ½" NB to 60" NB

• DN15 to DN1500

Facing Types

• Raised Face (RF)

• Flat Face (FF)

• Ring Type Joint (RTJ)

Surface Finish

• CNC Machined Finish

• Satin Finish

• Polished Finish

• Pickled Finish

• Mirror Finish

Duplex & Super Duplex Blind Flanges Grades

Duplex S31803 Blind Flanges

These flanges provide excellent resistance to corrosion and are widely used in process industries.

Duplex S32205 Blind Flanges

Highly suitable for marine, offshore, and chemical applications.

ASTM A182 F51 Blind Flanges

Manufactured according to ASTM standards for critical industrial services.

ASTM A182 F60 Blind Flanges

Offer excellent strength and resistance to harsh operating environments.

Super Duplex S32750 Blind Flanges

Provide exceptional resistance to pitting and crevice corrosion.

Super Duplex S32760 Blind Flanges

Ideal for offshore platforms, seawater systems, and highly aggressive process environments.

ASTM A182 F53 Blind Flanges

Designed for superior corrosion resistance in demanding applications.

ASTM A182 F55 Blind Flanges

Suitable for severe service conditions involving chlorides and elevated temperatures.

Chemical Composition

Duplex S32205

• Chromium: 22–23%

• Nickel: 4.5–6.5%

• Molybdenum: 3–3.5%

• Nitrogen: 0.14–0.20%

• Iron: Balance

Super Duplex S32750

• Chromium: 24–26%

• Nickel: 6–8%

• Molybdenum: 3–5%

• Nitrogen: 0.24–0.32%

• Copper: Maximum 0.50%

• Iron: Balance

Mechanical Properties

Duplex and Super Duplex Blind Flanges exhibit outstanding mechanical characteristics.

Properties Include

• High tensile strength

• Superior yield strength

• Excellent hardness

• Outstanding fatigue resistance

• Excellent impact toughness

• Superior wear resistance

• Excellent ductility

• Exceptional structural stability

Applications of Duplex & Super Duplex Blind Flanges

Maruti International Duplex Blind Flanges are extensively utilized in numerous industries.

Oil & Gas Industry

Used in pipelines, refineries, offshore platforms, and gas processing plants.

Petrochemical Industry

Suitable for aggressive hydrocarbon processing systems.

Chemical Processing Plants

Ideal for corrosive media, acids, and chlorinated environments.

Offshore Industry

Engineered for harsh offshore operating conditions.

Marine Industry

Outstanding seawater corrosion resistance.

Desalination Plants

Widely utilized in seawater desalination facilities.

Power Generation

Used in condensers, cooling water systems, and industrial utilities.

Water Treatment Plants

Suitable for aggressive water treatment processes.

Pulp & Paper Industry

Provides excellent resistance to chemical attack.

Mining Industry

Ideal for highly abrasive and corrosive applications.

Fertilizer Industry

Used in chemical manufacturing plants and fertilizer production facilities.

Manufacturing Process

Maruti International follows advanced manufacturing procedures.

Production stages include:

• Raw material inspection

• Forging

• Heat treatment

• CNC machining

• Facing operations

• Drilling

• Surface finishing

• Dimensional inspection

• PMI Testing

• Ultrasonic Testing

• Dye Penetrant Testing

• Final quality inspection

• Packaging and dispatch

Quality Assurance

Every Duplex and Super Duplex Blind Flange undergoes stringent quality testing procedures.

Testing includes:

• Chemical composition analysis

• Mechanical testing

• Tensile testing

• Hardness testing

• Positive Material Identification (PMI)

• Ultrasonic Testing (UT)

• Dye Penetrant Testing (DPT)

• Visual inspection

• Dimensional verification

• Surface finish inspection

Mill Test Certificates (MTC) are supplied with every order.

Duplex Blind Flanges Supplier Across India

Maruti International supplies Duplex and Super Duplex Blind Flanges throughout India.

Maharashtra

Mumbai, Navi Mumbai, Pune, Thane, Nashik, Aurangabad, Nagpur, Kolhapur, Sangli, Satara and Solapur.

Gujarat

Ahmedabad, Surat, Vadodara, Rajkot, Jamnagar, Bharuch, Ankleshwar, Gandhidham, Vapi and Bhavnagar.

Tamil Nadu

Chennai, Coimbatore, Salem, Tiruppur, Hosur, Madurai, Erode and Trichy.

Karnataka

Bengaluru, Mysore, Hubli, Belgaum and Mangalore.

Telangana

Hyderabad, Warangal and Karimnagar.

Andhra Pradesh

Visakhapatnam, Vijayawada, Kakinada and Guntur.

Kerala

Kochi, Thrissur, Kozhikode and Kollam.

Delhi NCR

New Delhi, Noida, Greater Noida, Gurugram, Faridabad and Ghaziabad.

Punjab

Ludhiana, Chandigarh, Mohali and Jalandhar.

Rajasthan

Jaipur, Jodhpur, Udaipur, Ajmer and Kota.

Uttar Pradesh

Kanpur, Lucknow, Agra, Meerut and Varanasi.

Madhya Pradesh

Indore, Bhopal and Jabalpur.

Chhattisgarh

Raipur and Bhilai.

Odisha

Bhubaneswar, Paradip and Rourkela.

West Bengal

Kolkata, Howrah and Durgapur.

Uttarakhand

Haridwar, Rudrapur and Dehradun.

Duplex Blind Flanges Exporter Worldwide

Maruti International exports Duplex and Super Duplex Blind Flanges to global markets.

Middle East

UAE, Saudi Arabia, Oman, Qatar, Kuwait and Bahrain.

Europe

Germany, France, Italy, Spain, Belgium, Netherlands and Poland.

Asia

Singapore, Malaysia, Indonesia, Thailand, Vietnam and South Korea.

Africa

South Africa, Egypt, Nigeria, Kenya and Tanzania.

North America

United States, Canada and Mexico.

South America

Brazil, Chile and Argentina.

Oceania

Australia and New Zealand.

Why Choose Maruti International?

Maruti International is among the preferred Duplex Blind Flanges Manufacturers in India because of our commitment to quality and customer satisfaction.

Premium Raw Materials

We use certified Duplex and Super Duplex stainless steel sourced from approved mills.

Advanced Manufacturing Facilities

Modern forging and CNC machining ensure precise manufacturing.

International Standards Compliance

Products conform to ASTM, ASME, ANSI, DIN, EN, BS and JIS specifications.

Customized Manufacturing

Products are available according to customer drawings, dimensions and technical requirements.

Competitive Pricing

High-quality products at industry-competitive prices.

Global Export Capability

Reliable logistics support for international shipments.

Technical Expertise

Professional engineering support for material selection and application guidance.

Timely Delivery

Efficient inventory management ensures prompt delivery schedules.

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Maruti International – Leading Duplex & Super Duplex Blind Flanges Exporter in India

Maruti International is a trusted Duplex Blind Flanges Manufacturer, Supplier and Exporter in India, providing premium-quality flange solutions for highly corrosive and critical industrial applications. With advanced manufacturing capabilities, rigorous quality control procedures, extensive export expertise, and a commitment to engineering excellence, we deliver products that meet the highest international standards.

Whether you are looking for a reliable Duplex Blind Flanges Manufacturer in Mumbai, a dependable Super Duplex Blind Flanges Supplier in India, or a global Blind Flanges Exporter, Maruti International offers world-class products supported by competitive pricing, technical expertise, customized manufacturing solutions, and timely worldwide delivery.