Super Duplex Steel UNS S32550 Tubes Manufacturer and Supplier in Thailand
Super duplex steel DIN 1.4507 seamless tube is designed for superior strength and exceptional resistance to corrosion, making them ideal for demanding industrial systems. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd. is a trusted manufacturer and supplier of Super Duplex Steel UNS S32550 seamless tubes, based in Chon Buri, Thailand, delivering products that meet global quality standards. With flexible sizing, wall thickness and custom production options, we cater to diverse project needs. At Thaida, Our manufacturing process involves precision engineering, advanced welding techniques and strict quality control measures to produce tubes with superior strength. These Super duplex steel tubes comply with ASTM A789 and ASME SA789 standards. We ensure fast delivery, quality and efficiency in every order.
Product Overview: Super Duplex UNS S32550 Seamless Tubes
Super duplex F61 seamless tubes are made from high-strength super duplex steel. UNS S32550 alloy tubes offer better weldability while maintaining superior strength compared to UNS S32205. Available surface finishes include pickled, polished, or mill finish, providing flexibility for various applications. Key physical properties include a density of 7.8 g/cm³, melting point around 1400°C and excellent thermal conductivity. Mechanical properties include a tensile strength of 80,000 psi, yield strength of 60,000 psi and elongation of 25%, ensuring reliable performance in demanding conditions.
Key Benefits of UNS S32550 Seamless Tubes
The super duplex F61 seamless tube benefits such as mechanical strength, weldability, corrosion resistance and more are listed below.
High Mechanical Strength
These tubes deliver outstanding strength, making it ideal for high-pressure and load-bearing applications.
Good Weldability and Fabrication Characteristics
These seamless tubes can be easily welded and fabricated without compromising tube integrity.
Enhanced Corrosion Resistance
Resists corrosion in harsh and aggressive environments, ensuring long-term reliability.
Excellent Performance in Chloride-Containing Environments
Perfect for marine and chemical settings with high chloride exposure.
Superior Resistance to Stress Corrosion Cracking
Super duplex steel S32550 seamless tubes perform well under tension and corrosion, reducing the risk of cracking.
Long Service Life in Demanding Conditions
These tubes are built to last in extreme conditions, minimizing maintenance and replacement costs.
Why Choose Our Super Duplex S32550 Seamless Tubes
We are the best Super Duplex Steel UNS S32550 Seamless Tubes Supplier in Thailand, trusted for quality and reliability. Our tubes meet ASTM A789 standards, come with competitive pricing, fast delivery and positive customer reviews. We’re certified, offer consistent quality and ensure satisfaction with every order.
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
Super Duplex S32550 Seamless Tubes Specification
The detailed specifications of super duplex S32550 seamless tubes including key technical parameters like size, form, type and standards are given below.
| Grade | Super Duplex Steel UNS S32550 |
|---|---|
| Standard | ASTM A789 / ASME SA789 |
| Size | 1/2" NB to 30" NB |
| Seamless Tubes Sizes | 1/2" NB – 10" NB |
| Form | Round, Square, Rectangular, Hydraulic Etc. |
| Schedule | SCH05, SCH10, SCH20, SCH30, SCH40, STD, SCH60, SCH80, SCH120, SCH140, SCH160, XS, XXS |
| Length | Single Random, Double Random & Cut Length |
| Type | Seamless |
| End | Plain End, Beveled End, Threaded |
| Test Certificate | MTC, IBR TC, Lab TC from Govt. App. Lab with Third Party Inspection |
Super Duplex Steel F61 UNS S32550 Seamless Tubes Size Chart
Our UNS S32550 tubes size chart includes length, diameter, weight and wall thickness for precise pipeline configuration.
| Pipe Size (in) |
Diameter (in) MM |
Nominal Thickness (in) MM |
Transverse Areas (in2) MM2 |
Length of Pipes (ft per sq. foot of surface) |
Volume (ft3/ft) |
Weight | Number of Threads per inch of Screw | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| External | Internal | External | Internal | Steel | External Surface (ft) |
Internal Surface (ft) |
(lb/ft) | (kg/m) | ||||
| 1/8 | 0.405 | 0.27 | 0.07 | 0.13 | 0.06 | 0.07 | 9.43 | 14.20 | 0.0004 | 0.24 | 0.36 | 27 |
| ¼ | 0.540 | 0.36 | 0.09 | 0.23 | 0.10 | 0.13 | 7.07 | 10.49 | 0.0007 | 0.42 | 0.63 | 18 |
| 3/8 | 0.675 | 0.49 | 0.09 | 0.36 | 0.19 | 0.17 | 5.66 | 7.75 | 0.0013 | 0.57 | 0.84 | 18 |
| ½ | 0.840 | 0.62 | 0.11 | 0.55 | 0.30 | 0.25 | 4.55 | 6.14 | 0.0021 | 0.85 | 1.26 | 14 |
| ¾ | 1.050 | 0.82 | 0.11 | 0.87 | 0.53 | 0.33 | 3.64 | 4.64 | 0.0037 | 1.13 | 1.68 | 14 |
| 1 | 1.315 | 1.05 | 0.13 | 1.36 | 0.86 | 0.49 | 2.90 | 3.64 | 0.0060 | 1.68 | 2.50 | 11 ½ |
| 1 ¼ | 1.660 | 1.38 | 0.14 | 2.16 | 1.50 | 0.67 | 2.30 | 2.77 | 0.0104 | 2.27 | 3.38 | 11 ½ |
| 1 ½ | 1.900 | 1.61 | 0.15 | 2.84 | 2.04 | 0.80 | 2.01 | 2.37 | 0.0141 | 2.72 | 4.04 | 11 ½ |
| 2 | 2.375 | 2.07 | 0.15 | 4.43 | 3.36 | 1.08 | 1.61 | 1.85 | 0.0233 | 3.65 | 5.43 | 11 ½ |
| 2 ½ | 2.875 | 2.47 | 0.20 | 6.49 | 4.79 | 1.70 | 1.33 | 1.55 | 0.0333 | 5.79 | 8.62 | 8 |
| 3 | 3.500 | 3.07 | 0.22 | 9.62 | 7.39 | 2.23 | 1.09 | 1.25 | 0.0513 | 7.58 | 11.27 | 8 |
| 3 ½ | 4.000 | 3.55 | 0.23 | 12.56 | 9.89 | 2.68 | 0.95 | 1.08 | 0.0687 | 9.11 | 13.56 | 8 |
| 4 | 4.500 | 4.03 | 0.24 | 15.90 | 12.73 | 3.17 | 0.85 | 0.95 | 0.0884 | 10.79 | 16.06 | 8 |
| 5 | 5.563 | 5.05 | 0.26 | 24.30 | 20.00 | 4.30 | 0.69 | 0.76 | 0.1389 | 14.61 | 21.74 | 8 |
| 6 | 6.625 | 6.07 | 0.28 | 34.47 | 28.89 | 5.58 | 0.58 | 0.63 | 0.2006 | 18.97 | 28.23 | 8 |
| 8 | 8.625 | 7.98 | 0.32 | 58.42 | 50.02 | 8.40 | 0.44 | 0.48 | 0.3552 | 28.55 | 42.49 | 8 |
| 10 | 10.750 | 10.02 | 0.37 | 90.76 | 78.85 | 11.90 | 0.36 | 0.38 | 0.5476 | 40.48 | 60.24 | 8 |
| 12 | 12.750 | 11.94 | 0.41 | 127.64 | 111.90 | 15.74 | 0.30 | 0.32 | 0.7763 | 53.60 | 79.77 | 8 |
| 14 | 14.000 | 13.13 | 0.44 | 153.94 | 135.30 | 18.64 | 0.27 | 0.28 | 0.9354 | 63.00 | 93.75 | 8 |
| 16 | 16.000 | 15.00 | 0.50 | 201.05 | 176.70 | 24.35 | 0.24 | 0.25 | 1.2230 | 78.00 | 116.08 | 8 |
| 18 | 18.000 | 16.88 | 0.56 | 254.85 | 224.00 | 30.85 | 0.21 | 0.23 | 1.5550 | 105.00 | 156.26 | 8 |
| 20 | 20.000 | 18.81 | 0.59 | 314.15 | 278.00 | 36.15 | 0.19 | 0.20 | 1.9260 | 123.00 | 183.05 | 8 |
| 24 | 24.000 | 22.63 | 0.69 | 452.40 | 402.10 | 50.30 | 0.16 | 0.17 | 2.7930 | 171.00 | 254.48 | 8 |
UNS S32205 Duplex Steel Seamless Tubes Pressure Rating
Super duplex steel F61 seamless tube pressure rating chart includes temperature-based pressure limits and wall thickness-wise strength performance.
| Tube O.D. (in.) | Wall Thickness of Tubes (inches) | |||||||
|---|---|---|---|---|---|---|---|---|
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
Equivalent Grades of S32550 Seamless Tubes
The equivalent table for DIN 1.4507 seamless tubes presents global equivalents from various engineering standards and codes.
| STANDARD | UNS | WERKSTOFF NR. |
|---|---|---|
| Duplex 32550 | S32550 | 1.4410 |
Chemical Composition of ASTM A789 UNS S32550 Seamless Tubes
UNS S32550 seamless tubes chemical composition table details the percentage of each element present.
| Grade | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| S32550 | ≤0.04 | ≤1.50 | ≤0.040 | ≤0.03 | ≤1.00 | 4.50–6.50 | 24.00–27.00 | 2.90–3.90 | 0.10–0.25 | 1.50–2.50 |
Mechanical Properties S32550 Super Duplex Stainless Steel Seamless Tubes
| Yield Strength | Tensile Strength | Elongation (Minimum) | Hardness (Maximum)* | ||
|---|---|---|---|---|---|
| (Ksi) | (Mpa) | (Ksi) | (Mpa) | (Bhn) | |
| 79.8 | 550 | 110.3 | 760 | 25 | 270 |
Super Duplex Steel S32550 Seamless Tubes Manufacturing Process
Manufacturing UNS S32550 Seamless Tubes includes a structured five main steps which is as follows. Each step is precisely executed to meet industry standards.
1. Raw Material Selection
High-quality stainless 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.
Applications of Super Duplex Stainless Steel S32550 Seamless Tubes
Super Duplex Steel S32550 Seamless Tubes are primarily used in the offshore oil and gas industry for subsea piping and riser systems. They are also used in desalination plants, chemical processing units, pulp & paper industry and marine environments where both strength and corrosion resistance are crucial.
Oil and Gas Industry
Marine & Shipbuilding
Chemical and Petrochemical Industry
Power Generation & Heat Exchange
Aerospace & Defense
Pulp & Paper Mill Equipment
Desalination Equipment
Food and Beverage Industry
Pharmaceutical & Biotechnology
FAQ
What material is UNS S32550?
What material is UNS S32550?
UNS S32550 is a super duplex stainless steel with high chromium, molybdenum, and nitrogen content. It combines austenitic and ferritic structures to offer strong corrosion resistance and high strength, making it suitable for harsh chemical and seawater environments.
What differentiates UNS S32550 from other Super Duplex grades?
What differentiates UNS S32550 from other Super Duplex grades?
S32550 balances strength and corrosion resistance better than some grades. It has excellent pitting and crevice corrosion resistance while maintaining toughness. Its chemical mix also reduces susceptibility to stress corrosion cracking in hot, aggressive fluids.
Is S32550 duplex or super duplex?
Is S32550 duplex or super duplex?
S32550 is classified as a super duplex stainless steel. It has higher alloying elements than standard duplex grades, giving superior strength and corrosion resistance.
What makes UNS S32550 better than standard duplex or austenitic stainless steel?
What makes UNS S32550 better than standard duplex or austenitic stainless steel?
It offers double the strength of 316 or 2205 duplex steel while resisting pitting, crevice corrosion, and stress cracking. It also lasts longer in seawater, chemical, and high-pressure applications.
What is the difference between S32550 and S32205?
What is the difference between S32550 and S32205?
S32205 is a standard duplex grade with slightly lower corrosion resistance and strength. S32550 has higher chromium, molybdenum, and nitrogen, providing better performance in aggressive acids and seawater systems.
What industries use UNS S32550 Seamless Tubes?
What industries use UNS S32550 Seamless Tubes?
It is used in offshore oil rigs, chemical plants, desalination units, pulp and paper mills, and power plants. Any high-pressure, corrosive environment benefits from its strength and longevity.
What is the lifespan of super duplex tubes S32550?
What is the lifespan of super duplex tubes S32550?
With proper installation and maintenance, S32550 tubes can last decades. They resist corrosion and cracking, making it reliable for long-term use in chemical, marine, and high-pressure systems.