Duplex Steel S31803 Flanges

$0.55 - $1.85

Minimum Order : 450 unit

Customization as per requirements


Duplex Steel S31803 Flanges – Specification

Specification Details
Flanges TypesSlip On, Lap Joint, Weld Neck, Long Weld Neck, Threaded, Blind, Companion
Class150 Lbs, Pn 6, 300 Lbs, 10, 25, 16, 600 Lbs, 900 Lbs, 40, 64, 100, 1500 Lbs, 160, 2500 Lbs Asa 150, Asa 300
Size1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000
TypeRaised Face (rf), Large Male Female (lmf), Small Tongue, Flat Face (ff), Groove, Small Male Female (smf), Ring Type Joint (rtj), Large Tongue & Groove, Lap Joint Face (ljf)

Duplex Steel S31803 Flanges Manufacturer in India

Riddhi Siddhi Metal Impex strengthens critical piping systems as a Duplex Steel S31803 Flanges manufacturer and the flanges produced by the company are resistant to corrosion and stability and ideal service life. This is a duplex stainless steel grade which is a combination of austenitic and ferritic phases to obtain reliable strength and resistance under harsh conditions of operation. It is also very popular in installations that have to combine mechanical reliability and corrosion performance.

  • Dual phase microstructure enhances fatigue of materials that handle loads better.
  • Operates efficiently in chemically hostile and chloride sealant-containing stream.
  • Holds structural integrity when continuously operated to 280°C.
  • Fabrication friendly attributes do permit regular welding and assembly.
  • Turned and cut to a high level of dimensional control to fit the pipes.

These flanges are available in the chemical processing plants, offshore platforms, marine pipelines, and pressure-handling systems. Industries that purchase via a professional B2B Platform enjoy the stability of uniform quality, volume, and application project customization that guarantee seamless incorporation into the high volume and demand industrial implementations


Type of Sub-products

  • Duplex Steel S31803 Weld Neck Flanges
    Duplex Steel S31803 Weld Neck Flanges

    Duplex Steel S31803 Weld Neck Flanges

    Designed for high-pressure applications, these flanges have a long tapered hub that provides excellent stress distribution through the weld neck.

  • Duplex Steel S31803 Slip On Flanges
    Duplex Steel S31803 Slip On Flanges

    Duplex Steel S31803 Slip On Flanges

    Easy to install and weld, slip-on flanges are ideal for low-pressure systems and are commonly used in cooling water lines and fire protection systems.


Frequently Asked Questions

What are Duplex Steel S31803 Flanges?

Duplex Steel UNS S31803 Flanges are manufactured using a duplex stainless steel alloy. This alloy provides excellent resistance to corrosion and is particularly resistant to stress corrosion cracking. It also offers greater strength than other austenitic stainless steel, making it perfect for high-pressure uses. These flanges come in blind, slip-on, and weld neck designs to accommodate applications and possess favorable weldability characteristics. ASME 16.5 Duplex Steel UNS S31803 Flanges can be utilized in temperatures ranging from -50°F to 1200°F.

What are the standard specifications for Duplex Steel S31803 Flanges?

Duplex Steel S31803 Flanges are commonly produced to meet global standards for size and strength specifications, such as ASTM A182, ASTM A240, ASTM A276, ASTM A479, and ASME B16.5 or ASME B16.47.

What is the Duplex Steel S31803 Flange used for?

Duplex Steel S31803 Flange is designed for applications that require superior corrosion resistance compared to S31803. S31803 is a duplex stainless steel grade with enhanced resistance against pitting and crevice corrosion. These flanges are widely utilized in environments that contain chloride ions, including seawater applications, desalination plants, and chemical processing plants.


Countries We Export – Duplex Steel S31803 Flanges

  • India

Cities We Supply – Duplex Steel S31803 Flanges

  • Ahmadpur
  • Ahmadnagar
  • Ahmedabad
  • Bangalore Urban
  • Bangalore Rural
  • Bengaluru
  • Coimbatore
  • Chennai
  • Chandigarh
  • Haridwar
  • Hyderabad
  • Jaipur
  • Jodhpur
  • Jodhpur (ahmedabad)
  • Kalyan
  • Kolhapur
  • Mumbai
  • Mumbai Suburban
  • Murud (raigad)
  • Nagpur
  • Lucknow
  • New Delhi
  • Navi Mumbai
  • Kolkata
  • Nashik
  • Pune
  • Raipur
  • Rajkot
  • Rampura
  • Sion, Mumbai
  • Surat
  • Thane
  • Varanasi
  • Visakhapatnam
  • Moradabad
  • Angul
  • Rudrapur
  • Hosdurg
  • Gandhinagar
  • Rajahmundry
  • Durgapur
  • Bharuch
  • Panipat

Industries We Serve – Duplex Steel S31803 Flanges

  • Sugar industry

    Sugar

  • Oil And Gas Industries industry

    Oil And Gas Industries

  • Paper Mill industry

    Paper Mill

  • Power Plant industry

    Power Plant

  • Bridge And Building industry

    Bridge And Building

  • Aerospace Industries industry

    Aerospace Industries

  • Automobile Industry industry

    Automobile Industry

  • Electrical Industry industry

    Electrical Industry

  • Defense Industry industry

    Defense Industry

  • Construction & Fabrications industry

    Construction & Fabrications

  • Ring Man Units industry

    Ring Man Units

  • Railways industry

    Railways

  • Gasket Industry industry

    Gasket Industry

  • Pharmaceuticals Industry industry

    Pharmaceuticals Industry