Duplex Pipes

Duplex Pipe Solutions by Kwality Steelage Pvt. Ltd.

Looking for a reliable supplier of Duplex pipes in mumbai for your industrial needs? Kwality Steelage Pvt. Ltd. offers a comprehensive range of Duplex pipe solutions tailored to meet the demands of industries like oil & gas, chemical processing, marine engineering, and power generation. Known for their exceptional corrosion resistance, strength, and durability, our Duplex pipes are ideal for applications that require consistent performance in harsh environments with high pressures and temperatures. With an extensive inventory, we ensure fast delivery of premium Duplex pipes, including both seamless and welded options, at competitive prices.

Our offerings include a variety of Duplex grades, such as UNS S31803, S32205, and S32750, to meet the diverse requirements of B2B clients. As one of India’s largest stockholders, Kwality Steelage Pvt. Ltd. maintains a robust inventory, including custom sizes and specifications, to serve both domestic and international markets. This positions us as a preferred partner for all Duplex piping needs.

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Our Duplex pipes are highly sought after for their resistance to corrosion, chloride stress, and thermal stability, making them suitable for critical applications like pipelines, structural supports, and fluid transport systems. Available in standards such as ASTM A789 and ASTM A790, these pipes are manufactured to meet stringent industry standards and are tailored to client specifications for optimal performance. We also provide protective coatings, such as 3LPE and FBE, to ensure extended durability in challenging environments.

At Kwality Steelage Pvt. Ltd., we take pride in being a trusted supplier, focusing on quality, efficiency, and cost-effective solutions. With a dedicated team and advanced manufacturing techniques, we deliver Duplex piping products that meet today’s rigorous industrial requirements.

Duplex Pipe Specifications

  • Materials: Duplex stainless steel in various grades, including but not limited to UNS S31803, S32205, S32750, and S32760. Known for its exceptional strength and corrosion resistance, Duplex stainless steel offers high performance in demanding environments.
  • Standards:
    • ASTM Standards:
      • ASTM A789: Seamless and welded duplex stainless steel pipes for general corrosive environments.
      • ASTM A790: Seamless and welded duplex pipes, specifically designed for high-stress, high-corrosion applications.
    • ASME Standards:
      • ASME SA 789 & SA 790: Standards ensuring mechanical and corrosion-resistant properties suitable for high-temperature applications.
    • EN Standards:
      • EN 10216-5 & EN 10217-7: European standards for seamless and welded duplex stainless steel tubes under pressure, suited for industrial applications.
    • ISO Standards:
      • ISO 21457: International standard covering duplex pipes for pipeline transportation in offshore and marine environments.
    • NORSOK M-630: Ensures compatibility with the oil & gas industry’s stringent standards for duplex materials.
  • Size Range:
    • Outer Diameter (OD): Ranges from 1/2″ NB to 24″ NB (12.7mm to 610mm), suitable for diverse industrial applications.
    • Length: Available in standard lengths of 20 feet (Single Random Length), 40 feet (Double Random Length), and custom lengths up to 12 meters to meet project-specific needs.
  • Thickness:
    • Schedule Options: Available in SCH 10, SCH 40, SCH 80, SCH 160, and custom schedules for specific pressure requirements.
    • Wall Thickness: Ranges from 1.24mm to 25.4mm (0.049” to 1”), supporting various industrial applications needing different wall strengths.
  • Coatings:
    • 3-Layer Polyethylene (3LPE) Coating: Provides superior corrosion resistance, ideal for buried or submerged pipelines.
    • Fusion Bonded Epoxy (FBE): A high-performance coating for aggressive environments, commonly used in pipelines and marine industries.
    • Pickled & Passivated Finish: This finish removes contaminants, providing a clean and corrosion-resistant surface ideal for chemical processing applications.

Types of Duplex Pipes We Offer

  • Seamless Duplex Pipes: Manufactured without a welded seam, these pipes offer high strength and superior corrosion resistance, making them ideal for applications that demand durability and stability under high pressure and extreme temperatures. Seamless Duplex pipes are commonly used in industries like oil & gas, marine engineering, and chemical processing.
  • Welded Duplex Pipes: Created by welding Duplex stainless steel plates into a cylindrical form, these pipes are a cost-effective option for applications where seamless construction is not essential. Welded Duplex pipes are widely used in construction, water transport, and general industrial applications that require moderate pressure resistance.
  • Duplex 2205 Pipes: Known for excellent resistance to pitting, stress corrosion cracking, and fatigue, Duplex 2205 pipes are suitable for demanding applications in oil & gas, chemical processing, and seawater environments. Their strength and durability make them a popular choice for critical piping systems.
  • Super Duplex Pipes: With enhanced corrosion resistance and mechanical strength, Super Duplex pipes (UNS S32750 and S32760) are used in applications requiring high-performance under extreme conditions, such as offshore oil platforms, desalination plants, and petrochemical industries.
  • ERW (Electric Resistance Welded) Duplex Pipes: Produced by welding the seam through electric resistance, ERW Duplex pipes are commonly utilized in low to medium-pressure applications, such as water pipelines and structural components, where reliable corrosion resistance is needed.
  • LSAW (Longitudinal Submerged Arc Welded) Duplex Pipes: Manufactured by welding along the length of the pipe, LSAW Duplex pipes are known for their high strength and are suitable for large-diameter pipelines in oil and gas transportation, as well as other high-demand applications.
  • EFW (Electric Fusion Welded) Duplex Pipes: Created by fusing Duplex plates through an electric process, EFW Duplex pipes are highly robust, making them ideal for high-pressure applications and long-distance pipelines in industries like power generation and water treatment.

Industrial Applications of Duplex Pipes

Oil & Gas Pipelines

Duplex pipes are extensively used in the oil and gas industry, particularly for offshore applications and subsea pipelines, due to their exceptional corrosion resistance and strength. They are ideal for transporting crude oil, natural gas, and refined products under high-pressure conditions, ensuring long-lasting performance.

Water Treatment and Desalination

Thanks to their excellent resistance to chlorides and pitting, Duplex pipes are commonly employed in water treatment and desalination plants. Their durability makes them suitable for handling seawater and brine in desalination processes and various water distribution systems.

Structural Support in Marine and Offshore Construction

Duplex pipes provide robust structural support for marine and offshore constructions such as oil rigs, docks, and shipbuilding. They are valued for their ability to withstand harsh marine environments, offering longevity and resilience to structures exposed to saltwater.

Chemical Processing

In the chemical processing industry, Duplex pipes are widely used for conveying aggressive chemicals and acids. Their ability to resist stress corrosion cracking and high temperatures makes them suitable for demanding applications in chemical transportation, refining, and processing equipment.

Power Generation

Duplex pipes play a critical role in power plants, including nuclear and thermal facilities. Their high-temperature tolerance and strength under pressure make them suitable for steam pipelines, heat exchangers, and cooling systems, especially in power plants that require robust materials.

Pulp and Paper Industry

Duplex pipes are also applied in the pulp and paper industry, where they handle corrosive substances like bleach and acids used in paper processing. Their resistance to erosion and chemical damage ensures reliable operation in harsh processing environments.

Affordable Duplex Pipe Prices

The price range for Duplex pipes typically falls between $3,500 to $6,000 USD per metric ton, influenced by factors such as grade, size, and specific coating requirements. Key elements that can affect the final cost include:

Grade and Material Composition

Higher grades, such as Super Duplex (UNS S32750 or S32760), are generally priced higher due to their enhanced mechanical properties and corrosion resistance, making them suitable for demanding applications in offshore, marine, and chemical industries.

Pipe Size and Thickness

Larger diameter and thicker Duplex pipes require more material, increasing the cost. For instance, Schedule 40 pipes may be more affordable than Schedule 80 or Schedule 160 pipes due to differences in wall thickness, impacting both performance and price.

Surface Coating

Additional coatings, like 3LPE (Three-Layer Polyethylene) or FBE (Fusion Bonded Epoxy), can raise the price due to the added protection these coatings offer against corrosion in aggressive environments, such as seawater and chemical processing.

Manufacturing Type

Seamless Duplex pipes are generally more expensive than welded pipes due to the complexity and precision involved in production, making them ideal for high-pressure and high-temperature applications.

For the most competitive pricing on Duplex pipes, contact Kwality Steelage Pvt. Ltd. Our team is available to provide custom quotes based on your specific project requirements, ensuring you receive the best value for your investment.

Available Surface Finishes for Duplex Pipes

To meet diverse industry requirements and ensure extended durability, Kwality Steelage Pvt. Ltd. offers a range of surface finish options for Duplex pipes, including:

  • Pickled and Passivated Finish: This finish involves acid treatment to remove impurities, enhancing corrosion resistance and providing a clean, smooth surface. It is ideal for chemical processing and marine applications where resistance to corrosive substances is essential.
  • Polished Finish: Provides a smooth, aesthetically pleasing surface while minimizing surface roughness, making it suitable for applications in the food and pharmaceutical industries where hygiene and cleanliness are critical.
  • Fusion Bonded Epoxy (FBE) Coating: This high-performance coating offers exceptional corrosion resistance, particularly for pipelines in aggressive environments like oil & gas and marine applications. FBE coatings ensure a durable finish that withstands abrasives and harsh conditions.
  • 3-Layer Polyethylene (3LPE) Coating: Consisting of epoxy, adhesive, and polyethylene layers, this coating provides a triple layer of protection against corrosion, making it ideal for buried pipelines and applications in corrosive environments.
  • Electropolished Finish: An advanced finish achieved through electrochemical polishing, resulting in a highly smooth and corrosion-resistant surface. This finish is commonly used in high-purity applications like biotechnology and semiconductor industries.

Each surface finish option is carefully selected based on the application and environmental conditions, ensuring the longevity and reliability of Duplex pipes across various industrial sectors.

Quality Testing & Inspection for Duplex Pipes

  • Mill Test Certificates (MTC): Each Duplex pipe is supplied with a Mill Test Certificate in accordance with EN 10204 3.1 or 3.2, ensuring full transparency in material quality and mechanical properties. This certification confirms that each pipe meets industry standards and client specifications.
  • Third-Party Inspections: We facilitate third-party inspections upon customer request, ensuring that our Duplex pipes are evaluated by reputable agencies to verify compliance with quality and safety standards.
  • Ultrasonic Testing (UT): Ultrasonic testing is used to detect any internal flaws, such as cracks or voids, within the Duplex pipes. This non-destructive test ensures that each pipe has the structural integrity required for high-pressure applications.
  • Hydrostatic Testing: Each Duplex pipe undergoes hydrostatic pressure testing to confirm its strength and leak resistance, making it reliable for transporting fluids or gases under high pressure.
  • Dimensional Inspection: We conduct precise dimensional inspections to ensure each Duplex pipe meets specified dimensions and tolerances, maintaining accuracy for compatibility with various industrial systems.
  • Non-Destructive Testing (NDT): Additional non-destructive tests, such as radiographic testing (RT) or magnetic particle testing (MT), are available upon request to further verify product quality and performance, especially in critical applications.

Secure Packing Options

Wooden Pallets
Ideal for larger and heavier Duplex pipes, wooden pallets provide stable support to prevent movement and damage during transit, ensuring secure delivery to your site.
Wooden Boxes
For high-value or sensitive Duplex pipes, wooden boxes offer enhanced protection against impact and environmental factors such as moisture or dust. This option is suited for shipments requiring extra care.
Gunny Bags
Commonly used for smaller Duplex pipes, gunny bags offer lightweight protection against dust and minor abrasions, making them convenient for short-distance transportation.
Customized Packing
We offer tailored packing solutions based on specific client requirements, including additional protective layers, corrosion-resistant wraps, or custom-sized crates to ensure the safe transport of Duplex pipes in various environments.

Each packing option is designed to ensure that our Duplex pipes arrive in perfect condition, ready for immediate installation in your critical applications.

Reliable Delivery and Lead Times

We provide efficient delivery solutions to meet your project timelines:

  • 2-3 Days for In-Stock Items: For readily available Duplex pipes, we ensure quick delivery within 2-3 days, allowing you to maintain project continuity without delays.
  • 15-30 Days for Bulk Orders: For large or custom orders, we offer a reliable lead time of 15-30 days, accommodating high-volume requirements while ensuring quality and precision.

Why Kwality Steelage Pvt. Ltd. for Duplex Pipes

Choosing Kwality Steelage Pvt. Ltd. as your Duplex pipe supplier provides a range of benefits that distinguish us in the market. With a substantial stock capacity of 1100 tons and a robust inventory, we ensure the quick availability of Duplex pipes in a variety of types, sizes, and grades, catering to urgent and large-scale requirements. Backed by extensive industry experience, we understand the stringent demands and standards of industries such as oil & gas, marine engineering, and chemical processing. Our high-quality Duplex pipes are meticulously tested to meet these requirements, ensuring reliability and performance under challenging conditions.

Our dedicated customer service team provides end-to-end support, from consultation to after-sales assistance, ensuring a smooth and dependable experience for every client. At Kwality Steelage Pvt. Ltd., we prioritize quality, efficiency, and customer satisfaction, delivering Duplex piping solutions that exceed industry standards.

Where Kwality Steelage Pvt. Ltd. Sells Duplex Steel Pipes in India

Kwality Steelage Pvt. Ltd. is a trusted supplier of high-quality Duplex pipes across India, serving various industries with reliable solutions. Our extensive distribution network ensures timely deliveries to key industrial cities, including Mumbai, Delhi, Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Jaipur, Lucknow, Kanpur, Nagpur, Indore, Thane, Bhopal, Visakhapatnam, Pimpri & Chinchwad, Patna, Vadodara, Ghaziabad, Ludhiana, Agra, Nashik, Faridabad, Meerut, Rajkot, Kalyan & Dombivli, Vasai Virar, Varanasi, Srinagar, Aurangabad, Dhanbad, Amritsar, Navi Mumbai, Allahabad, Ranchi, Howrah, Coimbatore, Jabalpur, Gwalior, Vijayawada, Jodhpur, Madurai, Raipur, Kota, Guwahati, Chandigarh, Solapur, Hubli and Dharwad, Bareilly, Moradabad, Mysore, Gurgaon, Aligarh, Jalandhar, Tiruchirappalli, Bhubaneswar, Salem, Mira and Bhayander, Thiruvananthapuram, Bhiwandi, Saharanpur, Gorakhpur, Guntur, Bikaner, Amravati, Noida, Jamshedpur, Bhilai Nagar, Warangal, Cuttack, Firozabad, Kochi, Bhavnagar, Dehradun, Durgapur, Asansol, Nanded Waghala, Kolhapur, Ajmer, Gulbarga, Jamnagar, Ujjain, Loni, Siliguri, Jhansi, Ulhasnagar, Nellore, Jammu, Sangli Miraj Kupwad, Belgaum, Mangalore, Ambattur, Tirunelveli, Malegaon, Gaya, Jalgaon, Udaipur, and Maheshtala.

Export Market for Duplex Pipes

Kwality Steelage Pvt. Ltd. proudly exports Duplex pipes to a wide range of international markets, supporting industries across the globe with our high-quality, reliable products. Our extensive export reach includes key markets in the Middle East, Africa, Asia, Europe, and the Americas, where our Duplex pipes are trusted for their exceptional strength, corrosion resistance, and durability.

Our primary export destinations include:

  • Middle East: Saudi Arabia, Bahrain, Oman, Kuwait, Qatar, United Arab Emirates, Yemen
  • Africa: South Africa, Algeria, Angola, Egypt, Nigeria, Kenya, Ghana, Morocco, Tunisia, Uganda, and more
  • Asia: Singapore, Japan, South Korea, China, India, Indonesia, Malaysia, Thailand, Vietnam, Sri Lanka, and additional countries
  • Europe: Albania, Belarus, Belgium, France, Germany, Italy, Turkey, Ukraine, and more
  • Americas: United States, Canada, Brazil, Argentina, Mexico, Chile, Colombia, and the Caribbean

Get in touch with Kwality Steelage Pvt. Ltd. for reliable Duplex pipe solutions. Contact us for a personalized quote and ensure durable, high-performance piping for your project.