Duplex Flanges Manufacturer & Supplier in India

Duplex Flanges Manufacturer & Supplier in India

Piping Projects India is one of the leading Duplex Flanges Manufacturer in India. Our organization provides Duplex Steel Flanges that are created under strict professional supervision by national and international standards. We make Duplex Steel Flanges, Hastelloy Flanges, Cupro-Nickel Flanges, and SMO 254 Flanges in our facilities utilizing high-quality materials and cutting-edge technologies. Our organization is one of the largest Duplex Flanges Supplier in India. We produce Duplex Flanges in bulk to meet the needs of our esteemed clients from diverse industrial sectors.

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Duplex Flanges Manufacturer & Supplier in India

Duplex Flanges

Duplex Flanges Manufacturer in India
Duplex Blind Flanges Manufacturer in India
Duplex Slip On Flanges Supplier in India

Duplex Flanges Manufacturers - Specifications

  • Standards: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
  • Size: 1/8″ NB TO 24″ NB
  • Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
  • Grade: S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61


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What is Duplex Flanges?

Duplex Flanges are vital components of pipe systems and industrial applications made of duplex stainless steel. Duplex stainless steel is an alloy that combines the properties of austenitic and ferritic stainless steels, providing a unique set of benefits. These flanges are well-known for their remarkable corrosion resistance, mechanical strength, and endurance, making them perfect for harsh settings where traditional materials may fail.

Duplex Flanges are distinguished by their capacity to survive corrosion in harsh environments comprising chlorides, acids, and other corrosive substances. They are highly resistant to stress corrosion cracking, which is a prevalent issue in situations with high mechanical stresses.

Best Duplex Flanges Suppliers - Available Stock

Piping Projects India is a leading Duplex Flanges Manufacturer in India. This offers a diverse range of alternatives, ensuring that customers have access to high-quality Duplex Flanges that may be tailored to fit their individual application needs. Duplex Flanges are available in a wide range of diameters and bespoke varieties, some of which are shown below.

Duplex Flanges Chemical Composition

A prominent Duplex Flanges Manufacturer in India, specializes in ensuring exceptional quality through precise chemical composition. Our Duplex Flanges is dependable, robust, and performs optimally, meeting and exceeding industry standards in India and elsewhere.

Duplex Flanges Chemical Composition
Grade Carbon Manganese Silicon Phosphorus Sulfur Chromium Molybdenum Nickel Nitrogen Iron
S31803 / S32205 0.030 Maximum 2.00 Maximum 1.00 Maximum 0.030 Maximum 0.020 Maximum 22.0 To 23.0 3.0 To 3.5 4.50 To 6.50 0.14 To 0.20 63.72 Minimum


Duplex Flanges have several uses in industries that require strength, corrosion resistance, and dependability. These specialised components are especially common in industries including oil and gas, chemical processing, marine engineering, and desalination plants. In the oil and gas industry, Duplex Flanges are critical for offshore platforms and subsea pipelines because they can tolerate corrosive saltwater and severe chemicals, maintaining operational safety and integrity.

Duplex Flanges Mechanical Properties

As a top Duplex Flanges Supplier in India, Our Duplex Flanges offers superior mechanical properties, ensuring long-term endurance in critical applications. In India's industrial climate, our precision-engineered equipment performs well and lasts long.

Duplex Flanges Mechanical Properties
Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
S31803 / S32205 7.805 0.285 1420 – 1465 2588 – 2669


Duplex Flanges should be fitted in sensitive industrial situations where corrosion resistance, high strength, and dependability are required. These environments include offshore oil and gas platforms, subsea pipelines, chemical processing plants, marine engineering applications, and desalination plants. Duplex Flanges are used on offshore oil and gas platforms to link diverse piping systems, withstand the corrosive effects of seawater, and maintain the integrity of critical equipment and infrastructure.

Duplex Flanges Manufacturer in India

Duplex Flanges WIDELY USE IN?

  • Oil and Gas Industry: Duplex Flanges are used in offshore drilling platforms, subsea pipelines, and refineries to prevent corrosion from saltwater and corrosive chemicals, ensuring the integrity of pipes and equipment.
  • Chemical Processing Plants: These flanges are essential components in chemical processing plants, connecting pipes, tanks, and equipment. Their corrosion resistance makes them perfect for dealing with corrosive substances while maintaining system reliability.
  • Marine Engineering: Duplex Flanges are used in maritime engineering applications like shipbuilding, offshore structures, and port infrastructure. They withstand the corrosive effects of seawater and help to maintain the structural integrity of marine infrastructure.
  • Power Generation: Duplex Flanges are used extensively in power generation facilities such as nuclear, thermal, and renewable energy plants. They are utilized in plumbing systems to endure extreme temperatures, pressures, and corrosive conditions.

Duplex Flanges Weight Chart

Duplex Flanges Weight Chart
Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 Flanges PN14 Flanges 95 67 4 M12 14
AS 2129 Flanges Table C Flange 95 67 4 13 14
Table D Flange 95 67 4 13 14
Table E Flange 95 67 4 13 14
Table F Flange 95 67 4 13 14
Table H Flange 114 83 4 16 17
Table J Flange 114 83 4 16 17
ANSI B16.5 Flanges ANSI 150 Flange 89 60 4 13 16
ANSI 300 Flange 95 67 4 13 16
ANSI 600 Flange 95 67 4 13 16
ANSI 900 Flange 121 83 4 19 22
ANSI 1500 Flange 121 83 4 19 22
ISO 7005 (DIN) Flanges PN6 Flange 80 55 4 M10 11
PN10 Flange 95 65 4 M12 14
PN16 Flange 95 65 4 M12 14
PN20 Flange 90 60.5 4 M14 16
PN25 Flange 95 65 4 M12 14
PN40 Flange 95 65 4 M12 14

Things To Consider When Buying Duplex Flanges

Most Common Uses for Duplex Flanges

  • Architecture: Our items have a significant impact on the design of exterior walls, roofing systems, railings, and functional frameworks for windows and doors, demonstrating versatility across a wide range of structural elements.
  • Foodservice: A fully equipped kitchen must feature tables and counters, sinks and appliances, as well as food preparation tools.
  • Industrial: Chemical processing equipment, pharmaceutical equipment, maritime equipment, and oil and gas equipment.
  • Other: Medical supplies, jewels, and musical instruments.
Petrochemical Industry Power Plant Chemical Industry
Filtration, Disinfection and Chemicals Oil & Gas

Application & uses of Duplex Flanges

  • Sugar Industry
  • Power Industry
  • Shipbuilding Industry
  • Mechanical and Plant engineering
  • Food, Beverage, and Dairy
  • Oil and Gas Plant
  • Process Instrumentation

Supplying Duplex Flanges to Following Cities:

Piping Projects India is a leading Duplex Flanges Manufacturer in India. We proudly supply high-quality Duplex Flanges to major cities in India. We are known in the market as the India’s leading Duplex Flanges Supplier for a long time.

Cities We Supply in India
Cities We Supply
Raigad Pune Nashik Nagpur Mumbai
Ahmednagar Rajkot Kolkata Vadodara Jalandhar

Duplex Flanges Manufacturer in India

Duplex Flanges Manufacturer in India
Duplex Flanges Supplier in India


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