| Customization: | Available |
|---|---|
| Application: | Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry |
| Certification: | CE, ISO9001 |
|
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| Duplex Stainless Steel Pipe & Tubes Specification |
ASTM A789, ASTM A790, ASTM A928, ASME SA789, ASME SA790, ASME SA928 |
| Duplex Stainless Steel Pipe & Tubes Grades |
UNS S32205, UNS S31803, UNS S32750, UNS S32760, ® 2205, ® 2507, FERRINOX® 225, AMINOX® 225, ZERON® 100 |
| Duplex Stainless Steel Pipe & Tubes Type |
Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| Duplex Stainless Steel Pipe & Tubes Outer Diameter Size |
Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| Duplex Stainless Steel Pipe & Tubes Wall Thickness |
Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| Duplex Stainless Steel Pipe & Tubes Length |
01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| Duplex Stainless Steel Pipe & Tubes Ends |
Plain Ends / Beveled Ends |
| Duplex Stainless Steel Pipe & Tubes Delivery Conditions |
As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw, Bright Annealed |
| Duplex Stainless Steel Pipe & Tubes Coating |
Electropolish, Mechanical Polish, Satin Finish, Passivated |
| Duplex Stainless Steel Pipe & Tubes Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| Duplex Stainless Steel Pipe & Tubes Dimension |
All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| Duplex Stainless Steel Pipe & Tubes Value Added Services |
Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| Duplex Stainless Steel Pipe & Tubes Packaging |
Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Duplex Stainless Steel Pipe & Tubes Shipment & Transportation |
By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| Duplex Stainless Steel Pipe & Tubes Material Test Certificate |
Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
ASME SA789/A789M specifies requirements for seamless stainless steel pipes designed for corrosive and high-pressure environments. The UNS S31200 (Super Duplex), S31260, and S31803 (Duplex 2205) grades are premium duplex stainless steels offering a blend of high strength, corrosion resistance, and thermal stability.
| Property | UNS S31200 | UNS S31260 | UNS S31803 |
|---|---|---|---|
| Material Type | Super Duplex Stainless Steel | Lean Duplex/Advanced Duplex | Standard Duplex Stainless Steel |
| Chemical Composition | Cr (~24-26%), Mo (~6-7%), Ni (~7-9%), N (~0.3-0.4%) | Cr (~24-26%), Mo (~3-4%), Ni (~5-8%), Cu (~0.5-1.0%), W (~1.5-2.5%) | Cr (~21-23%), Mo (~3-3.5%), Ni (~4.5-6.5%), N (~0.08-0.2%) |
| Mechanical Strength | Ultra-high tensile strength (≥800 MPa) | Balanced strength and toughness (≥750 MPa) | High strength (≥620 MPa) |
| Corrosion Resistance | Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride-rich environments. | Enhanced resistance to acidic/oxidizing media | Strong resistance to chlorides, seawater, and organic acids. |
| Temperature Range | Performs well in cryogenic to elevated temperatures (up to 300°C/572°F). | Stable performance up to 250°C (482°F). | Suitable for -50°C to 300°C (-58°F to 572°F). |
| Fabrication & Weldability | Good weldability using TIG or plasma arc welding. No post-weld heat treatment required. | Excellent formability and weldability with standard techniques. | Easy to machine and weld with proper filler metals. |
| Standards | Complies with ASME SA789/A789M, ASTM A790, EN 1.4410, and NACE MR0175. | Meets ASME SA789/A789M, EN 1.4507, and NACE MR0103. | Certified to ASME SA789/A789M, EN 1.4462, and ASTM A928. |
Superior Corrosion Resistance:
UNS S31200: Ideal for aggressive offshore/oilfield environments (e.g., seawater, sour gas).
UNS S31260: Optimized for sulfuric acid and phosphoric acid processing.
UNS S31803: Cost-effective solution for chloride-containing media (e.g., desalination plants).
High Strength-to-Weight Ratio:
Duplex microstructure (austenite + ferrite) provides twice the yield strength of standard austenitic steels (e.g., 316L), reducing material thickness and weight.
Thermal and Fatigue Resistance:
Maintains structural integrity under cyclic thermal loads and high-pressure conditions.
Sustainability:
Long service life reduces replacement frequency, supporting eco-friendly industrial operations.
UNS S31200: Subsea pipelines, chemical reactors, LNG heat exchangers.
UNS S31260: Sulfuric acid scrubbers, pulp/paper processing equipment.
UNS S31803: Water treatment systems, oil/gas piping, heat recovery units.
Manufactured under strict ASME/ASTM guidelines, including:
Hydrostatic testing.
Non-destructive examination (NDT).
Chemical and mechanical property certification.
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