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Home> Products> Duplex Stainless Steel Pipe> Duplex Stainless Steel Welded Pipe> ASTM A790 S31803 Duplex Steel EFW Welded Pipe

ASTM A790 S31803 Duplex Steel EFW Welded Pipe

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Transportation: Ocean,Land,Air

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    Product Attributes Supply Ability & Additional Information
    Product Attributes

    Model No.Duplex Pipe

    BrandYUHONG

    TypeWelded

    CertificationBSI

    ApplicationGas Pipe

    Section ShapeRound

    UsageChemical Industry

    TechniqueEFW

    MaterialStainless Steel

    Product Description

    ASTM A790/A790M UNS S31803 F51 1.4462 Duplex Stainless Steel EFW Welded Pipe For Chemical Industry.


    Standard : ASTM/ASME A/SA789, A/SA790, A/SA928, DIN17456/17458, EN10216-5.

    We supply tubes according to the customers' requirement.

    Material Grade : UNS S31803, S32205, S32101, S32304, S32750, S32760, 1.4462, 1.4410 etc...

    Size Range:

    Stainless Steel Seamless Tube

    ASTM A789/A789M: OD: Φ12.7mm-Φ203mm; WT:0.5mm-6.35mm

    Stainless Steel Seamless Pipe

    ASTM A790/A790M: OD: Φ6mm-Φ325mm; WT:0.5mm-30mm

    Stainless Steel Welded Tube

    ASTM A789/A789M: OD: Φ12.7mm-Φ203mm; WT:0.5mm-4.0mm

    Stainless Steel Welded Pipe

    ASTM A790/A790M: OD: Φ10mm-Φ2000mm; WT:0.5mm-40mm (OD≤630mm for single seam; OD>Φ630mm For circumferential seam)

    ASTM A928/A928M: OD: Φ10mm-Φ406mm; WT:0.5mm-10mm

    Material Grade:

    UNS

    EN

    DIN

    C %

    Cr%

    Ni%

    Mo%

    N%

    Other %

    S31803

    1.4462

    X2CrNiMoN22-5-3

    0.030max

    21.0-23.0

    4.5-6.5

    2.5-3.5

    0.08-0.20

    /

    S32205

    1.4462

    X2CrNiMoN22-5-3

    0.030max

    22.0-23.0

    4.5-6.5

    3.0-3.5

    0.14-0.20

    /

    S32101

    1.4162

     

    0.040max

    21.0-22.0

    1.35-1.70

    0.10-0.80

    0.20-0.25

    Cu 0.10-0.80

    S32304

     

     

    0.030max

    21.5-24.5

    3.0-5.5

    0.05-0.60

    0.15-0.20

    Cu 0.05-0.60

    S32750

    1.4410

    X2CrNiMoN25-7-4

    0.030max

    24.0-26.0

    6.0-8.0

    3.0-5.0

    0.24-0.32

    Cu 0.50max

    S32760

     

     

    0.050max

    24.0-26.0

    6.0-8.0

    3.0-4.0

    0.20-0.30

    Cu 0.50-1.00

    Mechanical Property:

    UNS


    Tensile Strength 
    Min, Mpa



    Yield Strength 
    Min, Mpa


    Elongation in 2 in Or 50mm Min, %


    Hardness Max, 
    HRC


    S31803

    620

    450

    25

    30

    S32205

    655

    485

    25

    30

    S32101

    700

    530

    30

    30

    S32304

    690

    450

    25

    30

    S32750

    800

    550

    15

    32

    S32760

    750

    550

    25

    32


    UNS S32760, UNS S31803, UNS S32750, UNS S31254

    UNS S32154 is austenitic 6% molybdenum Super Duplex stainless steel used widely in seawater cooled power plant condensers.

    The first high-performance austenitic stainless steel designed specifically to use nitrogen for added corrosion resistance, S31254 has a superior resistance to chloride pitting, crevice corrosion and stress corrosion cracking, especially in water that contains chloride.

    Uses of UNS S31254 include condenser tubes, heat exchange tubes, tubesheets and service water piping in nuclear power plants.

    UNS S32760 is a Super Duplexstainless steel equivalent to A182 F55 with a microstructure of 50:50 austenite and ferrite. The high chromium and molybdenum content of Super Duplex makes S32760 extremely resistant to uniform corrosion by both organic and inorganic acids – especially those containing chloride.

    The higher than average molybdenum and chromium content also gives UNS S32760 greater heat resistance quality and is also designed, as a Super Duplex alloy stainless steel, to feature high tensile & yield strength, pitting resistance, strong weldability, resistance to stress corrosion cracking, erosion & crevice corrosion and corrosion fatigue and good toughness.

    UNS S32760 is used in equipment for the oil & gas industry, on offshore platforms, in heat exchangers, chemical processing, pressure vessels and boilers as well as in the petrochemical industry and desalination plants, including seawater piping.

    UNS S32750 is the most common Super Duplex grade, equivalent to A182 F53, combining high tensile and impact strength, with a low co-efficience for thermal expansion and a high thermal conductivity.

    The high chromium (25%), molybdenum (4%) and nitrogen levels provide excellent resistance to pitting, crevice and general corrosion, meaning that UNS S32750 is designed for use in demanding applications which require exceptional strength and corrosion resistance such as chemical process, petrochemical and offshore platforms and seawater equipment.

    Other uses of S32750 include heat exchangers, pressure vessels and boilers, fire-fighting systems, desalination plants, high pressure RO-plant and seawater piping, absorber towers, ducting & piping and power industry FGD systems.

    UNS S32750 also contains excellent mechanical properties, meaning that a light gauge of S32750 can be used to achieve the same design strength of a thicker nickel alloy – saving both weight and overall cost of fabrication.

    UNS S31803 is a Duplex stainless steel equivalent to A182 F51 (1.4462) created as a austenitic ferretic iron chromium-nickel alloy with molybdenum addition.

    Designed to combine improved resistance to stress corrosion cracking, pitting and crevice corrosion, S31803 is roughly double the strength of standard austenitic stainless steel. This means that UNS S31803 can be used successfully as an alternative to standard stainless steel specifications where a higher strength and higher stress corrosion resistance is required.

    As Duplex material, UNS S31803 offers the benefits of high strength and corrosion resistance as well as low thermal expansion, higher heat conductivity than austenitic steels, high energy absorption and good workability and weldability.

    Uses of UNS S31803 include forged or rolled Alloy Steel Pipe flanges, primarily for the petrochemical industry, forged fittings and valves for high temperature application, heat exchangers, chemical tanks, refineries, compressor parts for seawater desalination plants and offshore Pressure Vessel Parts

     

    Duplex Steel Welded Pipe Application:

    1. Chemical processing, Transport and Storage.

    2. Oil and gas exploration and offshore rigs.

    3. Oil and gas refining.

    4. Marine environments.

    5. Pollution control equipment.

    6. Pulp and paper manufacturing.

    7. Chemical process Plant.

     

    Some of the quality tests carried out by us includes:

    Corrosion Test

    Conducted only when specially requested by the client

    Chemical Analysis

    Test done as per required quality standards

    Destructive / Mechanical Testing

    Tensile | Hardness | Flattening | Flare | Flange

    Reverse-bend and Re. flat tests

    Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end

    Eddy Current Testing

    Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System

    Hydrostatic Testing

    100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .

    Air Under Pressure Test

    To check any evidence of air leakage

    Visual Inspection

    After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections

     

    YUHONG GROUP deal with Austenitic Stainless Steel, Nickel Alloy Steel (Hastelloy , Monel, Inconel, Incoloy) seamless and welded pipe and tube already more than 25 years, every year sell more than 80000 tons of steel pipe and tube. Our client already cover more than 45 countries, Like Italy, UK, Gernmany, USA, Canada, Chile, Colombia, Saudi Arabia, Russia, Korea, Singapore, Austrial, Poland, France , ....And our group branch company and factory have been already approved by : ABS, DNV, GL, BV, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2008, ISO 14001-2004. 

    If you have any inquires, please freely contact me. 

    Email: luis.bao@ steelseamlesstube.com

     

    Packaging & Delivery
    Package Type : Plywood Case /Iron Case/ In Bundles Packing
    Supply Ability & Additional Information

    PackagingPlywood Case /Iron Case/ In Bundles Packing

    TransportationOcean,Land,Air

    Place of OriginChina

    Supply Ability2000 Ton / Month

    CertificateABS, GL, DNV, NK, PED, AD2000, GOST 9941

    Payment TypeL/C,T/T,D/P,Money Gram,Western Union

    IncotermFOB,CFR,CIF,EXW,FCA

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    Home> Products> Duplex Stainless Steel Pipe> Duplex Stainless Steel Welded Pipe> ASTM A790 S31803 Duplex Steel EFW Welded Pipe
    YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2015, ISO 14001, ISO 18001, API 5L , API 5CT , API 6D, And our branch company Zhejiang Yuhongwell Steel Co.Ltd has expanded its field of activities and entered in trade and supply of tubular & flat products in Duxplex and Super Duplex, Stainless Steel, Nickel Base alloy Steel ,Cr-Mo alloy steel , Copper Nickel alloy steel,Carbon Steel for our reputed clients worldwide. These products are widely used in various important sectors like Mining, Energy, Boiler & Heat Exchanger, Petrochemical, Chemical Industry, Food plant, Paper plant, Gas and Fluid Industry etc. YUHONG HOLDING GROUP has gained rich experience in Pipes, Fittings, Flanges, Valves, Structural steel, Coils and Plates in past eight years. In a short span of time, YUHONG brand has marked its global presence in more than 40 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand,...
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