Seamless, Welded Super Duplex Steel UNS S31803 Pipes

Seamless, Welded Super Duplex Steel UNS S31803 Pipes

Name: Seamless, Welded Super Duplex Steel UNS S31803 Pipes
Brand: JAYANT IMPEX
Price: 614.0 INR
Availability: InStock

614.0 INR/Piece

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Product Details:

Diameter Available as per specification
Temperature Range -50C to +300C
Flexibility Rigid
Connection Type Welded, Seamless Joint
Tensile Strength 620 MPa
Thread Type Plain/Threaded (as required)
Coating Type Uncoated, Pickled as per request
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Seamless, Welded Super Duplex Steel UNS S31803 Pipes Price And Quantity

Price 614.0 INR/Piece
Minimum Order Quantity 1 Piece

Seamless, Welded Super Duplex Steel UNS S31803 Pipes Product Specifications

Thickness 1 mm to 50 mm
Connection Type Welded, Seamless Joint
Tensile Strength 620 MPa
Outer Diameter 6 mm to 630 mm
Thread Type Plain/Threaded (as required)
Coating Type Uncoated, Pickled as per request
Standard ASTM A790 / ASME SA790
Temperature Range -50C to +300C
Flexibility Rigid
Rated Pressure As per design code and thickness
Sealing Type Depends on end connection (Plain/Threaded/Welded)
Color Metallic Silver / Grey
Usage Industrial, Construction, Petrochemical, Oil & Gas
Shape Round
Diameter Available as per specification
Length Single Random, Double Random, or Custom
Material Super Duplex Steel
Material Grade UNS S31803
Application High corrosion environments, Structural, Mechanical, Marine
Yield Strength 450 MPa
Product Type Seamless, Welded Pipe
Surface Treatment Polished / Annealed
Tolerance 0.02 mm
Section Shape Circular
Bend Radius Standard Pipe Bend Radius, as per pipe size
Connection Plain End, Beveled End

Density 7.8 g/cm3
Hardness 290 HBW
Manufacturing Process Cold Drawn, Hot Rolled
End Finish Plain, Beveled, Threaded
Corrosion Resistance Excellent to chlorides, acids, and seawater
Magnetic Permeability Low
Packaging Bundled With Steel Strips, Plastic Caps On Ends
Elongation 25%
Weldability Excellent
Inspection Hydrostatic tested, 100% Radiography

Product Description

Technical Specifications Overview

Property	Value / Specification
Material Grade	Standard Duplex Steel UNS S31803
Common Trade Names	2205, F51, Werkstoff 1.4462
Dual Certification	UNS S32205
Manufacturing Standards	ASTM A790, ASME SA790, ASTM A928, EN 10216-5
Microstructure	50% Austenite / 50% Ferrite Dual-Phase
PREN Value	33.0 to 35.0 (%Cr + 3.3x%Mo + 16x%N)
Standard Pipe Forms	Seamless, Welded, ERW, EFW, Fabricated
Seamless Size Range	1/2 inch NB to 10 inch NB
Welded Size Range	6 inch NB to 30 inch NB

Chemical Composition (Weight %)

Element	Minimum (%)	Maximum (%)
Chromium (Cr)	21.00	23.00
Nickel (Ni)	4.50	6.50
Molybdenum (Mo)	2.50	3.50
Nitrogen (N)	0.08	0.20
Manganese (Mn)	-	2.00
Silicon (Si)	-	1.00
Carbon (C)	-	0.030
Phosphorus (P)	-	0.030
Sulfur (S)	-	0.020
Iron (Fe)	Balance	Balance

Mechanical Properties (Room Temp)

Property	Value
Tensile Strength (UTS)	620 MPa min
Yield Strength (0.2% Proof)	450 MPa min
Elongation in 2 inches	25% min
Hardness (Brinell)	290 HBW max
Impact Energy (-40 C)	80 J min

Nominal Pipe Dimensions & Wall Thickness (ASME B36.10M / B36.19M)

All wall thickness measurements below are listed in millimeters (mm).

NPS (Inches)	Outside Diameter (mm)	Sch 10S (mm)	Sch 40 / STD (mm)	Sch 80 / XS (mm)	Sch 160 (mm)	XXS (mm)
1/2	21.3	2.11	2.77	3.73	4.78	7.47
3/4	26.7	2.11	2.87	3.91	5.56	7.82
1	33.4	2.77	3.38	4.55	6.35	9.09
1-1/2	48.3	2.77	3.68	5.08	7.14	10.15
2	60.3	2.77	3.91	5.54	8.74	11.07
3	88.9	3.05	5.49	7.62	11.13	15.24
4	114.3	3.05	6.02	8.56	13.49	17.12
6	168.3	3.40	7.11	10.97	18.26	21.96
8	219.1	3.76	8.18	12.70	23.01	22.23
10	273.0	4.19	9.27	15.09	28.58	25.40
12	323.8	4.57	10.13	17.48	33.32	25.40
14	355.6	4.78	11.13	19.05	35.71	-
16	406.4	4.78	12.70

Outstanding Corrosion Resistance

UNS S31803 super duplex steel pipes exhibit excellent resistance to chlorides, acids, and seawater, making them a preferred choice for harsh environments such as marine, petrochemical, and offshore installations. Their robust chemical composition offers enhanced durability and longevity, minimizing the risk of material degradation.

Superior Mechanical and Physical Properties

With a tensile strength of 620 MPa and a yield strength of 450 MPa, these pipes are built to withstand demanding mechanical stresses. An elongation of 25% ensures adequate ductility, while a density of 7.8 g/cm3 and a hardness of 290 HBW support their use in high-pressure, high-temperature settings.

Comprehensive Inspection and Quality Assurance

Every pipe is subjected to hydrostatic testing and 100% radiographic inspection, guaranteeing structural reliability. Additional tests ensure low magnetic permeability and precise tolerances down to 0.02 mm. This extensive quality control ensures that the products consistently meet or exceed industry standards.

FAQ's of Seamless, Welded Super Duplex Steel UNS S31803 Pipes:

Q: How are Seamless and Welded Super Duplex Steel UNS S31803 Pipes manufactured?

A: These pipes are produced using either cold drawing or hot rolling methods. Seamless pipes are formed without a weld seam, providing uniform strength, while welded pipes are created by joining shaped steel and then welding, which allows for larger sizes and flexibility in applications.

Q: What environments are Super Duplex Steel UNS S31803 Pipes best suited for?

A: UNS S31803 pipes are ideal for high-corrosion environments such as offshore oil & gas platforms, chemical plants, marine structures, and other settings exposed to chlorides, acids, or seawater. Their excellent corrosion resistance and robust mechanical properties make them versatile for demanding uses.

Q: When should I use plain end, beveled end, or threaded end finish?

A: The choice of end finish depends on the piping connection method and application. Plain ends suit welding or slip-on couplings, beveled ends facilitate welding joints, and threaded ends are best for mechanical connections that may need to be dismantled or adjusted.

Q: Where are these Super Duplex Steel pipes commonly used in India?

A: These pipes are widely used across India in construction projects, oil & gas facilities, petrochemical plants, power generation setups, and marine industries. They are distributed by authorized dealers, exporters, fabricators, and suppliers throughout the country.

Q: What testing and inspection processes ensure the quality of these pipes?

A: Each pipe undergoes hydrostatic testing, 100% radiography, and checks for dimensional accuracy, magnetic permeability, and surface finish. These stringent quality controls ensure structural integrity and adherence to international standards.

Q: What are the benefits of choosing UNS S31803 super duplex pipes over regular steel pipes?

A: UNS S31803 pipes offer higher tensile and yield strength, improved resistance to corrosion (especially in chloride-rich and acidic environments), as well as better longevity and reduced maintenance costs, making them a more durable and economical option in the long run.

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