Duplex Steel Tubes Manufacturer and Supplier in Thailand
Duplex stainless steel combines both ferritic and austenitic microstructures, offering superior strength and enhanced resistance to stress corrosion compared to standard stainless steel. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd. is a trusted manufacturer and supplier of duplex stainless steel tubes, located in Chon Buri, Thailand. For more demanding environments, super duplex grades provide even greater corrosion resistance. We maintain strict quality standards through advanced manufacturing techniques, including cold drawing, heat treatment, and precision testing. Our certifications ensure compliance with international specifications, reflecting our commitment to quality and reliability. These duplex tubes are used in industries such as petrochemical, marine, and construction, where they are valued for their mechanical strength, durability, and cost-efficiency. We offer a broad range of types and grades tailored to meet specific project requirements, delivering high-performance tubing solutions both domestically and internationally.
Product Overview: Duplex Steel Tubes
Duplex stainless steel tubes, also known as DSS tubes, are a two-phase microstructure composed of austenite and ferrite. This unique structure provides duplex tubes with enhanced strength and excellent corrosion resistance, especially in harsh environments. Lean Duplex stainless steel tubes, a variation of the traditional duplex steel, contain a lower nickel content, offering a cost-effective solution while maintaining the core benefits, such as enhanced strength and excellent pitting resistance. The alloying elements in duplex steel typically include chromium, molybdenum, and nickel, with some containing nitrogen to further improve mechanical properties. They are also available in various grades such as UNS S32205, UNS S32750, UNS S32760, UNS S32304, UNS S32101, and Low Carbon UNS S32205L. Making it an ideal material for applications that require both strength and resistance to corrosion. Additionally, these tubes can reduce the overall nickel content without compromising performance.
Advantages of ASTM A789 Duplex Tubes
Enhanced Corrosion Resistance
These tubes are highly resistant to various forms of corrosion, including pitting and crevice corrosion, making them ideal for use in environments exposed to harsh chemicals or seawater.
Excellent Weldability
Duplex steel tubes offer good weldability, ensuring that they maintain their strength and corrosion resistance even after welding, making them easy to integrate into complex systems.
High Strength and Durability
Duplex steel tubes are designed to withstand extreme pressure and mechanical stress, providing excellent structural integrity and longevity in demanding applications.
Improved Stress Resistance
Known for their resistance to stress corrosion cracking, duplex tubes perform exceptionally well under high-stress conditions, making them a reliable choice for high-pressure applications.
Cost-Effective
With a combination of high strength and corrosion resistance, duplex steel tubes reduce the need for frequent replacements, leading to lower long-term maintenance and operational costs.
Why Choose Thaida for Your Duplex Steel Tubing Needs?
We are trusted duplex stainless steel tube suppliers with years of experience in manufacturing high-quality duplex steel tubes. We provide high-quality tubes designed for superior corrosion resistance and strength. We offer customized solutions to meet your specific requirements, backed by competitive pricing and reliable, timely delivery. Our commitment to quality and customer satisfaction makes us the go-to choice for all your duplex steel tubing 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 Stainless Steel Tubes Specifications
| Tubes Specifications | ASTM A789 / ASME SA789 |
|---|---|
| Dimensional specification | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| ASTM A213 Seamless Tubes Size | 1 / 2" NB - 16" NB |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Duplex steel 2205 Tubes Manufacturing Shapes | Hydraulic, Round, Rectangle, Square, Hex, Honed |
| Duplex Tubes Manufacturing Techniques | Seamless |
| Duplex Tubes Schedule Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Ferritic Stainless Steel Tubes End Types | Plain End, Beveled End, Treaded One End, TBE (Treaded Both Ends) |
| Delivery Condition of Duplex steel Tubes | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| Surface Finish | No.1, No.4, No.8 Mirror Finish, 2B |
| Value Added Services | Cutting, Beveling, Polishing, Threading, Destructive, Non-Destructive, Ultrasonic Testing |
Different Types of Duplex Steel Tubes
The various types of DSS tubes are as follows:
At Thaida, we only provide high-quality Duplex Steel Seamless Tube.
Manufactured without any welded seams, seamless duplex tubes offer superior strength and uniformity, ensuring reliability under high pressure and extreme conditions.
Duplex Steel Mechanical Tubing
This type of tubing is specifically designed for mechanical applications that require high strength and durability. It is commonly used in structural and support systems where corrosion resistance is essential.
Duplex Steel Coiled Tubing
This coiled form of duplex tube is used in oil and gas applications, providing flexibility and resistance to corrosion under high-pressure conditions.
Duplex Heat Exchanger Tubes
These tubes are engineered for use in heat exchangers and are highly resistant to thermal and mechanical stresses, making them ideal for demanding industrial environments.
Duplex Steel Boiler Tubes
These tubes are used in boilers and heat exchangers where high resistance to heat and corrosion is critical. They ensure long-lasting performance even under extreme thermal conditions.
Duplex Steel Annealed Tubes
Annealed to enhance their corrosion resistance and toughness, these tubes are commonly used in various industries, including marine and chemical processing.
Duplex Steel Square Tubes
These square-shaped duplex tubes are commonly used in architectural and structural applications, offering a balanced combination of strength and corrosion resistance.
Duplex Steel Welded Tubes
Welded duplex tubes are fabricated using a welding process, offering good strength and resistance to corrosion for applications requiring welded joints.
Duplex Steel Capillary Tubes
These tubes are specially designed for high-precision applications, such as instrumentation, offering high resistance to stress corrosion cracking and fatigue.
Duplex Steel Rectangular Tubes
Designed for applications requiring high strength and resistance to corrosion, these rectangular tubes are frequently used in the chemical and petrochemical industries.
Duplex Steel High Pressure Tubing
Ideal for high-pressure environments, these tubes offer superior strength and corrosion resistance, commonly used in hydraulic systems and pressure vessels.
DSS Hydraulic Tubes
These tubes are designed specifically for hydraulic applications, offering the strength and resistance necessary for high-pressure systems in industries like automotive and aerospace.
Duplex Stainless Steel Tubes Sizes Chart
This chart provides a comprehensive overview of various duplex stainless steel tube sizes, helping you select the right dimensions for your application.
| WT × OD in mm | inch | Sch | Kg/m |
|---|---|---|---|
| 1.065 × 13.072 | 1/4 | 10S | 0.050 |
| 2.024 × 13.072 | 1/4 | 40S | 0.064 |
| 3.002 × 13.072 | 1/4 | 80S | 0.081 |
| 1.065 × 17.015 | 3/8 | 10S | 0.064 |
| 2.031 × 17.015 | 3/8 | 40S | 0.086 |
| 3.020 × 17.015 | 3/8 | 80S | 1.012 |
| 2.011 × 21.034 | 1/2 | 10S | 1.002 |
| 2.077 × 21.034 | 1/2 | 40S | 1.029 |
| 3.073 × 21.034 | 1/2 | 80S | 1.065 |
| 2.011 × 26.067 | 3/4 | 10S | 1.030 |
| 2.087 × 26.067 | 3/4 | 40S | 1.071 |
| 3.091 × 26.067 | 3/4 | 80S | 2.023 |
| 2.077 × 33.040 | 1 | 10S | 2.013 |
| 3.038 × 33.040 | 1 | 40S | 2.054 |
| 4.055 × 33.040 | 1 | 80S | 3.029 |
| 6.0352) × 33.040 | 1 | 160 | 4.030 |
| 2.077 × 42.016 | 1¼ | 10S | 2.073 |
| 3.056 × 42.016 | 1¼ | 40S | 3.044 |
| 4.085 × 42.016 | 1¼ | 80S | 4.053 |
| 6.0352) × 42.016 | 1¼ | 160 | 5.069 |
| 2.077 × 48.026 | 1½ | 10S | 3.016 |
| 3.068 × 48.026 | 1½ | 40S | 4.011 |
| 5.008 × 48.026 | 1½ | 80S | 5.049 |
| 2.077 × 60.033 | 2 | 10S | 3.099 |
| 3.091 × 60.033 | 2 | 40S | 5.052 |
| 5.054 × 60.033 | 2 | 80S | 7.060 |
| 8.0742) × 60.033 | 2 | 160 | 11.029 |
| 3.005 × 73.003 | 2½ | 10S | 5.035 |
| 5.016 × 73.003 | 2½ | 40S | 8.077 |
Manufacturing Process of Duplex Steel Tubes Explained
1. Raw Material Selection
High-quality duplex steel billets and strips are carefully selected for superior strength and corrosion resistance.
2. Tubes Formation
The selected raw material is formed into tubes using seamless extrusion methods, depending on the application.
3. Heat Treatment
Tubes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.
4. Cold Working and Finishing
After heat treatment, tubes are cold-worked for better surface finish, dimensional accuracy and improved strength.
5. Quality Control and Testing
Every tube is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.
Some of the Common Applications for Duplex Stainless Steel Tubes are
Duplex stainless steel tubes are primarily used in the oil and gas industry, especially for offshore platforms, subsea pipelines, and heat exchangers, where high strength and corrosion resistance are critical. Apart from oil and gas, duplex stainless steel tubes are also utilized in chemical processing plants for handling acidic and chloride-rich solutions. In the pulp and paper industry, they are used in bleaching equipment where resistance to aggressive chemicals is essential.
Duplex stainless steel tubes are widely used across the oil and gas, chemical industry, petrochemical, desalination plants, pulp and paper industry, and marine applications due their superior strength, excellent corrosion resistance.
Oil and Gas Industry
Marine Applications
Chemical Industry
Petrochemical Industry
Power Plants
Aerospace & Defense
Automotive and Transportation
Desalination Plants
Pulp and Paper Industry
FAQ Of Stainless Steel Tubes
Can Duplex Steel Tubes be used in high-pressure applications?
Can Duplex Steel Tubes be used in high-pressure applications?
Yes. Duplex steel tubes handle high pressure very well. The metal has strong yield strength and good crack resistance. This makes it safe for pumps, pipelines, and high-pressure chemical units. It also performs well where pressure and corrosive media exist together.
What is duplex steel tube?
What is duplex steel tube?
A duplex steel tube is made from a mix of austenitic and ferritic stainless steel. This blend gives high strength, good corrosion resistance, and solid durability. It works well in harsh plant and marine jobs. It also handles stress and heat better than many regular stainless grades.
Why choose Duplex Steel over standard stainless steel?
Why choose Duplex Steel over standard stainless steel?
Duplex steel gives more strength and better corrosion resistance than basic stainless grades. It fights pitting and stress cracking well, even in salt and chemicals. You also get a longer life and lower breakdown risk in tough use. In many harsh jobs, duplex outperforms common grades like 304 and 316.
Where is duplex steel tube used?
Where is duplex steel tube used?
Duplex tubes are used in seawater lines, chemical plants, and oil and gas units. You also see them in heat exchangers, pulp and paper systems, and fire-fighting rings. Any place that needs strength and rust resistance benefits from duplex tubes.
What is the difference between Duplex and Super Duplex Tubes?
What is the difference between Duplex and Super Duplex Tubes?
Super duplex tubes have higher chromium and molybdenum than standard duplex. This gives stronger corrosion and pitting resistance in extreme salt or acid areas. Duplex suits many hard jobs, while super duplex fits the most aggressive service zones.
Does duplex steel tube rust?
Does duplex steel tube rust?
Duplex steel resists rust very well. It holds up in saltwater, chemicals, and humid spaces. With proper care and clean surfaces, it stays rust-free even under tough use. Poor handling or dirty conditions can mark it, but deep rust is rare.
Why choose Duplex Steel Tubes over 304/316 stainless steel?
Why choose Duplex Steel Tubes over 304/316 stainless steel?
Duplex tubes offer higher strength and better corrosion resistance than 304 and 316. They also handle stress cracking and seawater far better. This helps cut repairs and downtime. When tough conditions are present, duplex gives safer and longer tube life.
What is the advantage of duplex steel tube?
What is the advantage of duplex steel tube?
The main advantages are strength, long service life, and strong corrosion resistance. The tube keeps its shape under load and heat, and holds up in salt and chemicals. It gives reliable flow, fewer failures, and lower long-term cost in demanding systems.