"Mehta Metal Industries", founded in 1978 by Babulal Mehta, is one of India's oldest and most trusted suppliers of high-quality stainless steel products.

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Duplex Steel Pipes & Tubes Manufacturers in India

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Duplex Steel Pipes & Tubes Manufacturers in India - Mehta Metal Industries

Mehta Metal Industries is one of the trusted Duplex Steel Pipes & Tubes Manufacturers in India, supplying high-performance duplex steel piping products for demanding industrial environments. Our duplex pipes and tubes are manufactured using advanced production technology and premium quality raw materials to ensure high strength, excellent corrosion resistance, and long service life in critical piping systems used across major industries.

Duplex stainless steel combines the properties of austenitic and ferritic stainless steel, giving these pipes and tubes superior resistance to stress corrosion cracking, pitting, and chloride environments. Because of these advantages, duplex steel pipes and tubes are widely used in industries such as oil & gas, petrochemical processing, offshore platforms, desalination plants, chemical facilities, and marine engineering. At Mehta Metal Industries, we manufacture and supply seamless and welded products in grades including F44, F45, F51, F53, F55, F60, and F61, serving EPC contractors, project engineers, distributors, and global importers.

Duplex Steel Pipes & Tubes

Duplex Steel Pipes & Tubes Overview

Duplex steel pipes and tubes are widely used in industries where high strength and superior corrosion resistance are required. Compared to conventional stainless steel piping materials, duplex pipes and tubes offer higher mechanical strength while maintaining excellent resistance to corrosion, making them suitable for demanding industrial environments.

At Mehta Metal Industries, our duplex stainless steel pipes and tubes are designed to perform reliably in aggressive conditions such as seawater systems, chemical processing pipelines, and offshore installations. These pipes and tubes can handle high pressure, temperature variations, and corrosive media while maintaining structural stability and durability.

Our product range includes seamless duplex pipes, welded duplex pipes, industrial process pipes, and duplex stainless steel tubes used in applications such as heat exchangers, pressure vessels, and structural frameworks. Each pipe and tube is carefully inspected to ensure dimensional accuracy, consistent material quality, and compliance with international standards.

Duplex Steel Pipes & Tubes Specifications

Specification Details
Material Duplex Stainless Steel Pipes & Tubes
Manufacturing Type Seamless Pipes / Welded Pipes
Standards ASTM A790, ASTM A789
Duplex Grades F44, F45, F51, F53, F55, F60, F61
Outer Diameter 6 mm – 610 mm
Wall Thickness 1 mm – 30 mm
Length Up to 6 meters or custom pipe length
Surface Finish Pickled, Annealed, Polished
End Type Plain End Pipe, Beveled Pipe End

All duplex steel pipes and tubes are manufactured in compliance with ASTM standards and tested for quality, durability, and corrosion resistance.

Sizes and Dimensions

Our duplex stainless steel pipes & tubes are available in wide ranges of industrial sizes to support various piping systems and structural tube applications.

Parameter Range
Pipe Diameter 1/8" NB to 24" NB
Tube Diameter 6 mm to 203 mm
Wall Thickness SCH 5 to SCH 160
Length 3 m, 6 m, 12 m or custom
Pipe Type Round Duplex Pipes & Tubes

Custom manufacturing is available for specialized engineering applications, offshore installations, and industrial process piping systems.

Duplex steel pipes and tubes manufacturers in India for corrosion resistant applications

Explore Our Product Range

Mechanical Properties

Steel Grade Yield Strength (MPa) Tensile Strength (MPa) Hardness Elongation % Min
F44 450 655 HB 290 Max 25
F45 450 655 HB 290 Max 25
F51 450 620 HB 293 Max 25
F53 550 795 HB 310 Max 20
F55 550 800 HB 310 Max 20
F60 450 620 HB 293 Max 25
F61 550 795 HB 310 Max 20

These mechanical properties make duplex steel pipes and tubes suitable for high-pressure industrial piping systems and structural pipe applications.

Chemical Composition

Steel Grade C % Max Mn % Max Si % Max Cr % Ni % Mo % N % P % Max
F44 0.03 2.00 1.00 24 – 26 6 – 8 3 – 4 0.24 – 0.32 0.030
F45 0.03 2.00 1.00 24 – 26 6 – 8 3 – 4 0.24 – 0.32 0.030
F51 0.03 2.00 1.00 21 – 23 4.5 – 6.5 2.5 – 3.5 0.08 – 0.20 0.030
F53 0.03 1.20 0.80 24 – 26 6 – 8 3 – 5 0.24 – 0.32 0.030
F55 0.03 1.20 0.80 24 – 26 6 – 8 3 – 5 0.24 – 0.32 0.030
F60 0.03 2.00 1.00 21 – 23 4.5 – 6.5 2.5 – 3.5 0.08 – 0.20 0.030
F61 0.03 1.20 0.80 24 – 26 6 – 8 3 – 5 0.24 – 0.32 0.030

The presence of chromium, molybdenum, and nitrogen improves the corrosion resistance and mechanical strength of duplex steel pipes and tubes.

Applications of Duplex Steel Pipes & Tubes

Because of their superior corrosion resistance and strength, duplex steel pipes and tubes are widely used in critical industrial environments.

Common applications of duplex pipes and tubes include:

  • Oil and gas production pipelines
  • Offshore drilling platforms
  • Petrochemical processing plants
  • Chemical manufacturing pipelines
  • Desalination plants
  • Marine piping systems
  • Heat exchanger tubes
  • Pressure vessels and industrial piping systems
  • Structural pipe frameworks for offshore structures

The high strength of duplex stainless steel pipes and tubes allows engineers to use thinner pipe walls, which reduces overall weight and material cost in large piping systems.

Duplex Steel Pipes Weight Chart

Pipe Size Schedule Weight (kg/m)
1 inch Pipe SCH 40 1.70
2 inch Pipe SCH 40 3.70
4 inch Pipe SCH 40 10.80
6 inch Pipe SCH 40 19.00
8 inch Pipe SCH 40 28.70

These weights are calculated according to standard ASTM pipe dimension charts used in industrial piping projects.

Quality Assurance

At Mehta Metal Industries, quality is a core part of our business philosophy and operational standards. We are committed to maintaining consistency, reliability, and compliance across all our processes, supported by structured quality management systems focused on continuous improvement, documentation control, and process monitoring to meet global industry expectations.

We are certified with multiple international standards that reflect our commitment to quality, safety, and environmental responsibility:

  • ISO 9001:2015 – Quality Management System
  • ISO 14001:2015 – Environmental Management System
  • ISO 45001:2018 – Occupational Health & Safety Management
  • PED (Pressure Equipment Directive 2014/68/EU) Certification

These certifications demonstrate our adherence to global quality benchmarks, workplace safety standards, and environmental regulations, strengthening our position as a reliable industrial manufacturer and supplier.

Our continuous focus on quality assurance ensures that every aspect of our operations is aligned with international standards, helping us build long-term relationships with clients across industries.

Why Choose Mehta Metal Industries

Industrial buyers rely on Mehta Metal Industries for high-quality duplex steel pipes and tubes manufactured according to international standards.

  • Advanced Pipe Manufacturing
    Our facilities are equipped with modern machinery capable of producing seamless duplex pipes, welded pipes, and industrial duplex tubes.
  • Custom Pipe & Tube Solutions
    We provide customized pipe diameters, tube sizes, pipe thickness, and tube wall thickness based on specific project requirements.
  • Bulk Supply Capability
    Our large inventory allows us to supply duplex pipes and tubes in bulk quantities for large industrial projects.
  • Export Supply
    We export duplex steel pipes and tubes to international markets including the Middle East, Africa, Southeast Asia, and Europe.
  • Strict Quality Control
    Each pipe and tube undergoes rigorous testing including:
    • Hydrostatic pipe pressure testing
    • Ultrasonic inspection
    • Positive Material Identification (PMI)
    • Dimensional inspection of pipes and tubes
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Industries We Serve

Our duplex steel pipes and duplex steel tubes are widely used across industries that require high strength, corrosion resistance, and long-term reliability in critical piping systems. Because of their ability to perform in aggressive environments, duplex pipes and tubes are commonly used in applications involving high pressure, corrosive chemicals, and marine conditions.

At Mehta Metal Industries, we supply duplex pipes and tubes to engineering companies, EPC contractors, fabrication units, and industrial distributors for various infrastructure and process piping projects.

Industries that commonly use our duplex steel pipes and tubes include:

  • Oil & Gas Industry
  • Offshore and Marine Engineering
  • Petrochemical Processing Plants
  • Chemical Manufacturing Industries
  • Power Generation Plants
  • Desalination and Water Treatment Facilities
  • Marine and Shipbuilding Industry
  • Industrial Fabrication and Engineering Companies

These industries depend on duplex stainless steel pipes and tubes for reliable fluid transportation, structural piping systems, and corrosion-resistant industrial pipelines. Our manufacturing capabilities allow us to supply duplex pipes and tubes suitable for both domestic industrial projects and international export requirements.

Frequently Asked Questions

  • What are duplex steel pipes and tubes?
    Duplex steel pipes and tubes are stainless steel piping products that combine ferritic and austenitic microstructures, providing high strength and excellent corrosion resistance.
  • What grades of duplex pipes do you supply?
    We supply F44, F45, F51, F53, F55, F60, and F61 duplex steel pipes and tubes according to ASTM standards.
  • What industries use duplex stainless steel pipes?
    Industries such as oil & gas, offshore engineering, petrochemical processing, desalination plants, and marine industries widely use duplex pipes and tubes.
  • Do you supply duplex pipes in custom sizes?
    Yes, Mehta Metal Industries supplies customized duplex pipes and tubes in different diameters, wall thicknesses, and lengths.
  • Are your duplex pipes ASTM certified?
    Yes, our duplex steel pipes and tubes are manufactured according to ASTM A790 and ASTM A789 standards.

Get a Quote

If you are searching for reliable Duplex Steel Pipes & Tubes Manufacturers in India, Mehta Metal Industries can supply high-quality duplex pipes and tubes for industrial applications worldwide.

Contact us today for:

  • Bulk duplex pipe and tube orders
  • Custom pipe sizes and tube specifications
  • Export inquiries for duplex steel pipes
  • Technical support for industrial piping projects

We ensure consistent quality, competitive pricing, and reliable supply of duplex stainless steel pipes and tubes for global industries.

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