Duplex Steel UNS S31500 Seamless Tube Manufacturer and Supplier in Thailand
Duplex Steel 315 Seamless Tubes offer superior strength, corrosion resistance, and longevity, making them ideal for demanding industrial applications. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., a trusted seamless stainless steel tube supplier in Chon Buri, specialises in high-quality Duplex UNS S31500 seamless tubes in various sizes, grades, and finishes. With years of pipe manufacturing experience, we provide custom cut-to-length and bulk supply services, ensuring precision and compliance with ASTM/ASME standards. Our facility in Chon Buri is equipped with stringent quality checks, guaranteeing durable, export-ready tubes tailored to your specifications. Trust us for reliable, competitively priced Duplex 315 seamless tubes that deliver unmatched performance.
What is UNS S31500 Duplex Steel Seamless Tubes ?
Features of DSS 315 Seamless Tubes
Explore the key features of Duplex Steel 315 Seamless Tubes, including sizes, grades, pressure ratings, corrosion resistance, and ASTM/ASME compliance in this detailed specifications table.
Strength
UNS S31500 features high-strength duplex steel, offering nearly double the strength of austenitic stainless steels. This ensures enhanced performance in high-pressure applications, contributing to better load-bearing capabilities and structural integrity.
Corrosion Resistance
Known for its excellent pitting and stress corrosion resistance, UNS S31500 provides outstanding protection against chloride stress corrosion cracking, pitting, and crevice corrosion, even in harsh chemical environments.
Seamless Design
The seamless design of duplex steel 315 seamless tubes ensures superior structural integrity, reducing the risk of weak spots and failure, which enhances reliability in critical applications and ensures a longer lifespan.
Durability
UNS S31500 offers a longer service life and reduced maintenance needs, making it ideal for applications in harsh environments where durability and reduced failure rates are essential.
Cost-Effectiveness
Due to its exceptional strength and corrosion resistance, UNS S31500 provides long-term cost savings, reducing maintenance and replacement costs in environments with high wear and tear.
Versatility
With its ability to withstand harsh environments, UNS S31500 is versatile and suitable for various industries, including marine, chemical processing, and petrochemical applications.
Why Choose Thaida for Your UNS S31500 Duplex Steel Seamless Tubes ?
Choose us for your UNS S31500 Duplex steel seamless tubes due to our commitment to providing competitive rates and exceptional quality. We offer high-quality tubes with on-time delivery. Our skilled workforce, combined with direct manufacturing capabilities and technical support, ensures you receive the best products from a trusted supplier.
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
Standard Specification of UNS S31500 Duplex Steel Seamless Tubes
| Grade | ASTM A789 |
|---|---|
| Outer Diameter | 6.00 mm to 101.40 mm |
| Wall Thickness | 0.70 mm to 8.00 mm |
| Length | Upto 24 Meter |
| Specifications | ASTM, ASME, DIN EN (GERMAN), NF (AFNOR), JIS (JAPAN) |
Duplex Steel UNS S31500 Seamless Tubing Chemical Composition
The chemical composition of the UNS S31500 seamless tube table includes a balanced mix of chromium, molybdenum, and nickel for enhanced corrosion resistance and strength.
| Grade | C | Mn | P | S | Cr | Si | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| S31500 | 0.030 max | 1.20-2.00 | 0.030 max | 0.030 max | 18.0-19.0 | 1.40-2.00 | 4.3-5.2 | 2.50-3.00 | 0.05-0.1 |
UNS S31500 Seamless Tubes Mechanical Properties
The mechanical properties table of UNS S31500 seamless tubes include high tensile strength and excellent resistance to stress corrosion cracking, making them ideal for extreme environments.
| Grade | Tensile Strength min, Ksi (MPa) | Yield Strength min, Ksi (MPa) | Hardness, max | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell | Rock-well Well C | ||||
| S31500 | 92 (630) | 64 (440) | 290 | 30.5 | 30 |
Manufacturing Process of UNS S31500 Duplex Steel Seamless Tubes
Following are the 5 steps involved in the duplex steel S31500 seamless tube manufacturing process to achieve high-quality output.
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.
Applications of UNS S31500 Duplex Steel Seamless Tubes
UNS S31500 Duplex Steel Seamless Tubes are primarily used in the oil & gas industry for offshore platforms, subsea pipelines, and high-pressure processing systems, making it the sector with the highest demand. These tubes are ideal for seawater desalination plants due to their chloride resistance, while chemical plants rely on them for handling corrosive acids and alkalis. They are also used in power generation for heat exchangers and condensers, where strength and corrosion resistance are critical. Pulp & paper industries use them in aggressive bleaching environments, and marine applications benefit from their durability in saltwater exposure.
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
Why choose Duplex Steel UNS S31500 over 304/316 stainless steel?
Why choose Duplex Steel UNS S31500 over 304/316 stainless steel?
Duplex Steel UNS S31500 has higher strength and better corrosion resistance than 304 or 316 stainless steel. It resists pitting, stress corrosion cracking, and chloride attack even in harsh seawater or chemical environments. This makes it suitable for high-pressure, high-stress applications. It also reduces maintenance and provides a longer service life.
Can Thaida provide customized Duplex Steel UNS S31500 Seamless Tubes?
Can Thaida provide customized Duplex Steel UNS S31500 Seamless Tubes?
Yes. We supply UNS S31500 tubes in custom lengths, diameters, and wall thicknesses. Special finishes and grades are also available to meet project requirements. Custom tubes ensure precise fit, reliable performance, and long-term durability in demanding applications.
Why choose Duplex Steel UNS S31500 over standard stainless steel?
Why choose Duplex Steel UNS S31500 over standard stainless steel?
UNS S31500 provides higher strength, excellent corrosion resistance, and improved durability over standard stainless steel. It performs well in chemical, marine, oil, and gas environments. The material withstands stress, high pressure, and aggressive chemical exposure, making it a reliable choice for long-term, safe operation.
What is the difference between seamless and welded duplex tubes?
What is the difference between seamless and welded duplex tubes?
Seamless duplex tubes are made from a single solid billet, offering uniform strength and higher pressure tolerance. Welded tubes are formed by rolling and joining a plate, which may slightly reduce pressure capacity. Both types resist corrosion, but seamless tubes are preferred for high-pressure, critical, or safety-sensitive applications. Welded tubes are more cost-effective for moderate applications.