Duplex Steel Pipes Manufacturer and Supplier in Thailand
Duplex steel pipe is a pipe made from a mix of austenitic and ferritic stainless steels, offering high strength and excellent corrosion resistance. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., a reliable manufacturer in Thailand, is known for producing Duplex Steel Pipes with advanced manufacturing practices. As a global leader in the steel industry based in Chon Buri, Thailand, we deliver various types of duplex steel pipes customised with different schedules and wall thicknesses to meet diverse industrial needs. These pipes are widely used in marine, chemical, oil & gas, and construction sectors. Verified by technical expertise, strict quality control, and competitive duplex pipe price to meet specific client requirements worldwide.
Product Details: Duplex Pipes
A Duplex Pipes, also referred to as duplex stainless pipe, or metal pipe, made from austenitic and ferritic stainless steel. This unique structure gives it excellent toughness, and enhanced stress corrosion cracking resistance. Its superior performance comes from its composition which includes chromium, nickel, and molybdenum alloys. These pipes are designed in varying wall thickness and outer diameter requirements. With a higher temperature limit, duplex pipes offer long-lasting reliability in demanding conditions, making them a preferred choice in technical applications.
Advantage of Duplex Steel Pipes
Duplex steel pipes offer benefits such as high strength, durability and corrosion resistance in demanding conditions.
High strength and durability
Combines superior high strength with exceptional fatigue resistance, ensuring long-term structural stability.
Corrosion Resistance
Outstanding protection against pitting, crevice corrosion, and stress corrosion cracking, even in aggressive environments.
Low Maintainence
Excellent surface finish and material integrity reduce the need for frequent inspections, repairs, or replacements.
Hygienic Properties
Non-porous and smooth interior prevents bacterial buildup, making it ideal for applications requiring cleanliness.
Environmental Sustainability
Versatility
Why Choose Thaida for Your Duplex Stainless Steel Pipes Needs?
Competitive Pricing
Global Exports Expertise
Large Inventory & Fast Dispatch
Custom Sizes & Finishes
Industry Certifications & Compliance
Advanced Production Technology
After-Sales Support, Service- Technical Support
In-House Testing & Full Traceability
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Duplex Steel Pipes Specifications
The below duplex steel pipe specifications table presents thickness, manufacturing types, test certificates, and standard compliance for quality piping solutions.
| Standard | ASTM A790 / ASME SA790 |
|---|---|
| Manufacturing Type | Seamless |
| Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS |
| Value Added Services | Cutting, Beveling, Threading, Destructive and Non Destructive Testing, Ultrasonic Testing, Draw & Expansion as per required Size & Length |
| End Types | Plain End, Beveled End, Threaded ASTM A790 DSS Pipes |
| Marking |
Specification, Material Grade, Nominal Size, Schedule or Wall Thickness, Method of Manufacturing (Seamless / Welded), Heat Number, Manufacturer / Supplier Name or Custom Logo – on request |
| Packaging | Packed in PE Fabric Bundles or Ply Wooden Box wrapped in Plastic or Standard Seaworthy Export Packing or as per Customer's Request |
Types of Duplex Steel Pipes
Duplex stainless steel pipe types include seamless, welded, round, square and more to meet specific structural, mechanical, and performance needs in different applications.
At Thaida, we only provide high-quality Duplex Steel Seamless Pipes.
Manufactured without any welds, these pipes offer superior mechanical strength, excellent surface finish, and enhanced corrosion resistance for demanding environments.
Lean Duplex Pipes
A cost-effective option with reduced nickel and molybdenum content, suitable for moderate corrosion conditions while maintaining strength and weldability.
Welded Duplex Pipes
Produced by welding steel strips or plates, these pipes are ideal for medium-pressure applications and offer consistent dimensions and good formability.
ERW Duplex Pipes
Electric Resistance Welded pipes provide uniform wall thickness and a smooth surface, making them suitable for general-purpose structural and fluid transfer systems.
EFW Duplex Pipes
Electric Fusion Welded pipes are preferred for large-diameter requirements, delivering strong joints and reliable stress corrosion cracking resistance.
Round Duplex Steel Pipes
Commonly used in structural and piping systems, these pipes provide efficient flow and are compatible with most standard pipe fittings
Square Duplex Steel Pipes
Known for their clean geometry and strength, square pipes are ideal for structural use where uniform support and appearance matter.
Rectangular Duplex Steel Pipes
Perfect for applications needing space-saving designs, these pipes provide excellent strength-to-weight ratio and are easy to fabricate and install.
Oval Duplex Pipes
These uniquely shaped pipes serve both decorative and functional purposes, offering flexibility in customized designs and fluid transport systems.
Duplex Steel Pipes Sizes Chart
The size chart of duplex steel pipes includes outer diameter and schedule specifications for accurate selection.
| 1/8" IPS(.405" O.D.) | 3 1/2" IPS( 4.000" O.D.) |
|---|---|
| Seamless Pipes, SCH 40, 80 | Pipes, SCH 10, 40, 80, 160, XXH |
| 1/4" IPS(.540" O.D.) | 4" IPS(4.500" O.D.) |
| Pipes, SCH 10, 40, 80 | Seamless Pipes, SCH 10, 40, 80, 160, XXH |
| 3/8" IPS(.675" O.D.) | 5" IPS( 5.563" O.D.) |
| Seamless Pipes, SCH 10, 40, 80 | Pipes, SCH 10, 40, 80, 160, XXH |
| 1/2" IPS(.840" O.D.) | 6" IPS(6.625" O.D.) |
| Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH | Seamless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH |
| 3/4" IPS(1.050" O.D.) | 8 ” IPS(8.625" O.D.) |
| Pipes, SCH 10, 40, 80, 160, XXH | Stainless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH |
| 1" IPS:(1.315′ O.D.) | 10" IPS(10.750" O.D.) |
| Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH | Pipes, SCH 10, 20, 40, 80 (.500), TRUE 80(.500) |
| 1-1/4" IPS(1.660" O.D.) | 12" IPS(12.750" O.D.) |
| Seamless Pipes, SCH 10, 40, 80, 160, XXH | Pipes, SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500) |
| 1-1/2" IPS(1.900" O.D.) | 14" IPS(14.000" O.D.) |
| Seamless Pipes, SCH 10, 40, 80, 160, XXH | Pipes, SCH10 (.188), SCH40 (.375) |
| 2" IPS(2.375" O.D.) | 16" IPS(16.000" O.D.) |
| Seamless Pipes, SCH 10, 40, 80, 160, XXH | Pipes, SCH10(.188), SCH40(.375) |
| 2 1/2" IPS(2.875" O.D.) | 18" IPS (18.000" O.D.) |
| Seamless Pipes, SCH 10, 40, 80, 160, XXH | Pipes, SCH-40 (.375) |
| 3" IPS( 3.500" O.D.) | |
| Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH |
Duplex Stainless Steel Pipes Manufacturing Process
The process of manufacturing duplex steel pipe is divided into five stages which is outlined below. Each pipe produced meets international specifications.
1. Raw Material Selection
High-quality duplex steel billets and strips are carefully selected for superior strength and corrosion resistance.
2. Pipes Formation
The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.
3. Heat Treatment
Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.
4. Cold Working and Finishing
After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.
5. Quality Control and Testing
Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.
Common Applications for Duplex Steel Pipes
Duplex steel pipes are primarily used in the oil and gas industry for offshore platforms, subsea pipelines, and processing systems. Their high strength and corrosion resistance make them ideal for handling harsh marine environments and high-pressure fluid transport. They are also used in desalination plants, chemical processing units, and pulp and paper industries where aggressive chemical exposure and stress corrosion are concerns.
Oil and Gas Industry
Marine Applications
Chemical Industry
Petrochemical Industry
Power Plants
Aerospace & Defense
Automotive and Transportation
Desalination Plants
Pulp and Paper Industry
FAQ's
What makes Duplex Steel Pipes different from standard stainless steel pipes?
What makes Duplex Steel Pipes different from standard stainless steel pipes?
Duplex steel pipes differ from standard stainless steel pipes due to their dual-phase austenite-ferrite microstructure, which provides greater strength, toughness, and resistance to corrosion, especially in chloride-rich environments. In contrast, standard stainless steels have a single-phase structure that offers good performance but lower strength and toughness. Duplex steels are preferred for demanding, high-pressure applications, while standard stainless steels are commonly used for general-purpose needs.
Can Duplex Steel Pipes be used in high-temperature applications?
Can Duplex Steel Pipes be used in high-temperature applications?
Yes, Duplex steel pipes perform well in high-temperature conditions due to their excellent mechanical strength, corrosion resistance, and fatigue performance. It is generally suitable for use up to around 300°C (572°F), as prolonged exposure beyond this limit may lead to embrittlement from intermetallic phase formation. The exact temperature tolerance depends on the grade and operating conditions, so it is important to consult manufacturer specifications before use.
What industries commonly use Duplex Steel Pipes?
What industries commonly use Duplex Steel Pipes?
Duplex steel pipes are widely used across various industries for their high strength and exceptional corrosion resistance. It is commonly used in oil and gas systems, chemical processing units, marine structures, pulp and paper plants, desalination facilities, power generation systems, and food processing equipment. Its durability, ability to withstand harsh environments, and resistance to corrosive substances make it ideal for demanding industrial applications.
Can Thaida provide customized Duplex Steel Pipes?
Can Thaida provide customized Duplex Steel Pipes?
Yes, Thaida offers customized Duplex Steel Pipes to meet specific project and performance requirements. These pipes can be tailored in terms of size, wall thickness, length, and grade to ensure optimal compatibility with various applications. Thaida’s customization options provide flexibility, precision, and reliable performance for both standard and specialized uses.
What is duplex steel pipe?
What is duplex steel pipe?
A duplex steel pipe is a type of stainless steel pipe made from an alloy that combines both austenite and ferrite microstructures, creating a high-strength, corrosion-resistant material.
Call us to discuss your requirements and source your ISO-certified materials today.
Call us to discuss your requirements and source your ISO-certified materials today.
Our manufacturing facilities are certified and recognized by leading international authorities, ensuring full compliance with global quality and safety standards. We hold certifications including the Certificate of Conformity (Сертификат соответствия), EAC Certificate of Conformity (ЕАЭС Сертификат соответствия), Recognition for BV Mode II Scheme, Certificate of Environmental Management System Certification, and Quality Management System Certificate. Call us today to discuss your requirements and source ISO-certified materials that meet your exact project needs.
What is the difference between duplex and standard steel?
What is the difference between duplex and standard steel?
Stainless steel is a corrosion-resistant alloy containing at least 10.5% chromium, which forms a protective oxide layer that prevents rust. It may include elements like nickel, manganese, or molybdenum to enhance its strength and durability, making it ideal for construction, food processing, and medical applications. Duplex steel, on the other hand, features a dual-phase microstructure of austenite and ferrite, offering higher strength and superior corrosion resistance, especially in harsh environments such as seawater and chemical processing. Compared to standard stainless steel, duplex grades provide improved mechanical performance and cost-effectiveness for demanding industrial uses.
What are the benefits of duplex steel?
What are the benefits of duplex steel?
The benefits of duplex steel include exceptional corrosion resistance, high mechanical strength, and good weldability. It is also cost-effective due to its lower nickel and molybdenum content compared to some other stainless steels, and its enhanced strength allows for the use of thinner sections, which can lead to weight savings.
What is the use of duplex steel?
What is the use of duplex steel?
Duplex steel is widely used in industries that demand both high strength and excellent corrosion resistance, such as chemical processing, petrochemical plants, oil and gas exploration, marine engineering, and desalination systems. It is commonly utilized in the fabrication of pressure vessels, storage tanks, heat exchangers, piping systems, and structural components for buildings and bridges