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ISO 9001:2015 Certified

Duplex Stainless Steel Pipes Manufacturer in India

Leading Manufacturer & Exporter of Duplex 2205, Super Duplex Pipes

In today's demanding industrial environments, the strength, corrosion resistance, and reliability of piping systems are critical to project success. As a leading Duplex Stainless Steel Pipes Manufacturer in India, CEBEX STEEL INDIA delivers high-performance duplex pipes engineered for superior durability in aggressive and high-pressure applications across domestic and global markets.

Duplex Stainless Steel Pipes combine the benefits of austenitic and ferritic stainless steels, offering higher strength, excellent resistance to stress corrosion cracking, and superior performance in chloride-rich environments. These pipes are widely used in oil & gas, petrochemical, offshore, marine, desalination, and chemical processing industries.

Our manufacturing capabilities include seamless, welded, ERW, and EFW Duplex Stainless Steel Pipes produced using advanced technology and strict quality control systems. Each pipe is designed for dimensional accuracy, high mechanical strength, and long service life under extreme operating conditions.

Duplex Stainless Steel Pipes Manufacturer in India – ASTM A790 Duplex 2205 & Super Duplex | Cebex Steel India

Why Choose Us as Your Duplex Stainless Steel Pipes Supplier?

Selecting a reliable Duplex Stainless Steel Pipes Manufacturer in India is essential to ensure safety, performance, and long-term operational efficiency. CEBEX STEEL INDIA is known for its advanced manufacturing infrastructure, technical expertise, and adherence to international quality standards.

We manufacture Duplex Stainless Steel Pipes in accordance with ASTM A790 and related ASME standards, ensuring suitability for high-pressure and corrosive environments. Each pipe undergoes rigorous testing, including PMI, hydrostatic testing, ultrasonic testing, and mechanical testing to guarantee material integrity and performance.

Our facility maintains full traceability from raw material to finished Duplex Stainless Steel Pipes using heat numbers and batch records. All products are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates along with inspection and compliance documentation.

With strong export capabilities, we ensure safe packaging, timely delivery, and complete documentation for shipments to Africa, the Middle East, Europe, and Southeast Asia.

Product Overview & Key Features

Feature Specification / Detail
Product Type Duplex Stainless Steel Pipes
Specification ASTM A790 (Seamless & Welded)
Duplex Grades UNS S31803, UNS S32205, UNS S32750
Types Seamless, Welded, ERW, EFW
Size Range ½" NB to 24" NB
Schedules SCH 5 to SCH XXS
Standards ASME B36.10, ASME B36.19

These Duplex Stainless Steel Pipes are designed to deliver high strength, excellent corrosion resistance, and long-term reliability in aggressive industrial environments.

Types of Duplex Stainless Steel Pipes We Manufacture

Our product range includes seamless Duplex Stainless Steel Pipes for high-pressure and high-temperature applications, along with welded pipes such as ERW and EFW for large diameter and structural uses. Seamless pipes provide superior strength due to their homogeneous structure, while welded pipes offer cost-effective solutions for large-scale industrial projects.

We also manufacture customized Duplex Stainless Steel Pipes with specific wall thicknesses, dimensional tolerances, and surface finishes as per project requirements, ensuring full compliance with engineering specifications.

Grades, Materials & International Standards

Material selection is critical for pipe performance in corrosive and high-pressure environments. We offer Duplex Stainless Steel Pipes in various grades compliant with international standards:

Grade Common Name Typical Applications
UNS S31803 / S32205 Duplex 2205 Pipe Oil & gas, chemical processing, marine
UNS S32750 Super Duplex 2507 Pipe Offshore, seawater systems, desalination
UNS S32760 Super Duplex High chloride and aggressive environments
UNS S32950 Duplex Alloy Industrial piping and heat exchangers

Applicable Standards

Category Standards
Pipe Standards ASTM A790
ASME Standards ASME SA790
Dimensional Standards ASME B36.10, B36.19
International Standards DIN, EN, ISO

Chemical Composition & Mechanical Properties

Chemical Composition Table (% by Weight)

Grade C Max Mn Max Si Max P Max S Max Cr (%) Ni (%) Mo (%) N (%)
UNS S31803 0.03 2.00 1.00 0.030 0.020 21.0–23.0 4.5–6.5 2.5–3.5 0.08–0.20
UNS S32205 0.03 2.00 1.00 0.030 0.020 22.0–23.0 4.5–6.5 3.0–3.5 0.14–0.20
UNS S32750 0.03 1.20 0.80 0.035 0.020 24.0–26.0 6.0–8.0 3.0–5.0 0.24–0.32
UNS S32760 0.03 1.00 1.00 0.030 0.010 24.0–26.0 6.0–8.0 3.0–4.0 0.20–0.30
UNS S32950 0.03 1.50 1.00 0.040 0.030 26.0–29.0 4.0–6.0 1.0–2.0

Mechanical Properties Table

Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness (HB)
S31803 620 450 25 293
S32205 620 450 25 293
S32750 800 550 15 310
S32760 750 550 25 300
S32950 620 485 20 290

Dimensions, Sizes & Weight Chart

We manufacture Duplex Stainless Steel Pipes in a wide range of dimensions, from ½" NB to 24" NB, with wall thicknesses from SCH 5 to XXS and custom schedules. Our production is fully compliant with ASME B36.19, ASME B36.10, EN, DIN, and other international standards. The following table illustrates typical dimensions for pipes as per ASME B36.19:

Size (NB) OD (mm) Thickness (mm) Weight (kg/m)
½" 21.3 2.77 1.27
1" 33.4 3.38 2.68
2" 60.3 3.91 5.44
4" 114.3 6.02 15.32
8" 219.1 8.18 43.39

Custom sizes and schedules are available as per project requirements.

Applications & Industries Served

Duplex Stainless Steel Pipes are widely used in industries where high strength and corrosion resistance are essential, including oil & gas, petrochemical, offshore platforms, desalination plants, marine systems, and chemical processing industries.

Their superior resistance to stress corrosion cracking and pitting makes them ideal for chloride-rich and aggressive environments.

Testing & Quality Assurance

All Duplex Stainless Steel Pipes undergo stringent quality checks including PMI testing, hydrostatic testing, ultrasonic testing, and full mechanical testing.

Each pipe is supplied with EN 10204 3.1 / 3.2 Mill Test Certificates, ensuring complete traceability, compliance, and quality assurance.

Packing, Delivery & Export Capabilities

Duplex Stainless Steel Pipes are packed in export-grade wooden cases, bundles, and protective wrapping to prevent damage during transit. Each pipe is properly marked with grade, size, standard, and heat number.

We provide complete export documentation including invoices, packing lists, and certificates to ensure smooth global delivery.

Exporting Duplex Stainless Steel Pipes to Africa

As a leading Duplex Stainless Steel Pipes Manufacturer in India, we supply high-quality pipes to major projects across Africa. Our export team ensures smooth logistics, timely delivery, and full compliance with international standards.

Our Duplex Stainless Steel Pipes are widely used in oil & gas, infrastructure, and power projects across Nigeria, Egypt, Kenya, South Africa, and other regions.

Related Alloy Pipes – Super Duplex, Stainless Steel, Inconel, Hastelloy

In addition to Duplex Stainless Steel Pipes, we also manufacture and export Super Duplex Pipes, Stainless Steel Pipes, Inconel Pipes, and Hastelloy Pipes. These alloy pipes are engineered for extreme environments where superior corrosion resistance, high strength, and temperature stability are essential.

Browse our full range:

Why Choose CEBEX STEEL INDIA?

CEBEX STEEL INDIA is known for delivering consistent quality, technical expertise, and reliable export services. We provide competitive pricing, strict quality control, and dependable delivery, making us a trusted partner for industrial piping solutions.

Frequently Asked Questions (FAQ)

What standards do your Duplex Stainless Steel Pipes comply with?

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Our pipes comply with ASTM A790, ASME SA790, and international standards such as DIN and EN.

Can you supply pipes with test certificates?

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Yes, all pipes are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates.

What is your delivery time?

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Standard sizes are available ex-stock, while custom orders are delivered within 2–4 weeks.

Do you offer custom pipe manufacturing?

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Yes, we manufacture Duplex Stainless Steel Pipes as per drawings and specifications.

How do you ensure quality?

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All pipes undergo strict inspection, testing, and full traceability documentation.

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