DIPTI METAL INDUSTRIES
Duplex Steel Welded Pipes Manufacturer: Grade 1.4462 (UNS S31803 / X2CrNiMoN22-5-3)
Dipti Metal Industries is a specialist Duplex 1.4462 pipes Manufacturer and UNS S31803 pipes Manufacturer from Mumbai, India. We are a reliable 1.4462 pipes Supplier and X2CrNiMoN22-5-3 pipes Supplier for critical applications requiring high mechanical strength and superior corrosion resistance to standard austenitic grades. Our stock is the Duplex Grade 1.4462 (commonly known as Duplex 2205) and is typically supplied dual-certified as UNS S31803/S32205. This alloy provides double the yield strength of 304/316L and is highly resistant to stress corrosion cracking in chloride environments. As a major Duplex 1.4462 pipes Exporter and UNS S31803 pipes Exporter, we offer competitive Duplex 2205 welded pipe price for your infrastructure projects.
Applicable Standards for Duplex 1.4462 (UNS S31803) Pipes
As a specialist Duplex 1.4462 pipes Exporter, our materials are certified to major global specifications, ensuring full compliance for international projects in aggressive service environments.
ASTM / ASME (USA) - Pipe & Tube
- ASTM A790 / ASME SA790: Welded Ferritic/Austenitic Stainless Steel Pipe
- ASTM A928 / ASME SA928: Electric Fusion Welded (EFW) Duplex Pipe (Heavy wall / large diameter)
- ASTM A789: Welded Ferritic/Austenitic Stainless Steel Tubing
- UNS No.: S31803 (Duplex 2205) / S32205 (Lean Duplex)
EN / DIN (Europe) - Pipe & Tube
- EN 10217-7: Welded Stainless Steel Tubes for Pressure Purposes (Commonly used for EN 10217-7 pipes Supplier certification)
- EN 10253-4: Butt-Welding Pipe Fittings (Matching fitting standard)
- EN No.: 1.4462
- EN Name: X2CrNiMoN22-5-3
Grade 1.4462 (X2CrNiMoN22-5-3 / UNS S31803) Composition & Properties
The Duplex Grade 1.4462 achieves its high performance from a carefully controlled nitrogen-enhanced alloying blend. We are a reliable UNS S31803 pipes Supplier and X2CrNiMoN22-5-3 pipes Exporter globally.
| Chemical Composition of Duplex 1.4462 (UNS S31803) - % by mass | ||||||
|---|---|---|---|---|---|---|
| Element | Value | Element | Value | Element | Value | |
| Chromium (Cr) | 21.0 – 23.0 | Molybdenum (Mo) | 2.5 – 3.5 | Nickel (Ni) | 4.5 – 6.5 | |
| Nitrogen (N) | 0.10 – 0.25 | Carbon (C) | ≤ 0.03 | PREN (Min) | > 34 | |
Key Mechanical Properties (Typical for 1.4462 Duplex)
Tensile Strength
620 – 880 MPa
Yield Strength (0.2% Rp)
≥ 450 MPa (Double of 304/316L)
Hardness (HB)
≤ 290 HB
Primary Applications of Duplex 1.4462 Welded Pipes
The superior combination of strength and corrosion resistance makes 1.4462 an indispensable material for severe environments. We are a major X2CrNiMoN22-5-3 pipes Manufacturer.
🌊 Desalination & Seawater Systems
- Seawater cooling systems
- Brine concentration plants
🛢️ Oil & Gas – Offshore & Onshore Piping
- Process piping in refinery & petrochemical units
- Water injection, high-salinity & high-pressure lines
🏭 Chemical & Petrochemical Plants
- Aggressive chemical transport lines
- Heat exchangers, tanks, and scrubbers
⚡ Power Plant Systems & Marine
- Heat Exchangers & Condenser Tubes
- Marine & Shipbuilding Applications
Manufacturing, Testing & Finishing for EN 10217-7 Duplex Pipes
Our commitment as a UNS S31803 pipes Exporter means strict control over the forming and welding processes to maintain the crucial 50/50 phase balance of Duplex stainless steel, ensuring material integrity and preventing sigma phase formation.
Process & Quality Control
- Duplex strip or plate forming (Roll forming)
- TIG / Laser / HF welded seam (Controlled low heat input)
- Heat treatment for duplex phase balance (Essential step)
- Pickling, passivation & bright annealing options
- Dimensional calibration and weld bead control
- Optional internal/external weld smoothing
Testing & Inspection Scope
- TC2 (Enhanced Testing): Required for pressure applications. Includes 2 tensile tests per pipe and full NDT.
- NDT: Eddy current / ultrasonic NDT of weld seam.
- Optional Tests: Hydrostatic test, IGC (Intergranular Corrosion) test, Impact testing, PMI (Positive Material Identification).
- Documentation: Full 3.1 or 3.2 Inspection Certificate.
Dimensional Range & Finish
| Parameter | Range / Tolerances | Standard Finish Examples |
|---|---|---|
| Outside Diameter (OD) | 6 mm to 1,016 mm (D3/D4 Tolerances) | W1 / W1A – Pickled / Heat-treated |
| Wall Thickness (WT) | 1.0 mm to 14.2 mm (T3 Tolerances) | W2R – Bright Annealed |
| Lengths | 6 to 18 metres (Standard), Fixed, DRL | WP – Polished (Custom) |
Duplex 1.4462 Welded Pipes Global Export Markets: Top Exporter Supplying from Mumbai, India
Dipti Metal Industries is a proud Duplex 1.4462 pipes Exporter, serving as a reliable X2CrNiMoN22-5-3 pipes Supplier and a major global distributor. We are a leading UNS S31803 pipes Manufacturer and 1.4462 pipes Exporter, ensuring compliant delivery to major industrial hubs across the world, especially the demanding desalination and offshore markets.
- USA: Houston, Los Angeles, New York, Chicago, New Orleans
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal
- Mexico: Mexico City, Monterrey, Guadalajara, Veracruz
- Panama: Panama City, Colón
- Trinidad and Tobago: Port of Spain, San Fernando
- Costa Rica: San José, Puerto Limón
- Guatemala: Guatemala City, Puerto Quetzal
- Honduras: Tegucigalpa, San Pedro Sula
- Nicaragua: Managua, Corinto
- El Salvador: San Salvador, Acajutla
- Jamaica: Kingston, Montego Bay
- Dominican Republic: Santo Domingo, Santiago
- Cuba: Havana, Santiago de Cuba
- Bahamas: Nassau, Freeport
- Barbados: Bridgetown
- Haiti: Port-au-Prince
- Puerto Rico: San Juan
- Belize: Belize City
- Brazil: São Paulo, Rio de Janeiro, Salvador, Curitiba
- Argentina: Buenos Aires, Cordoba, Rosario
- Chile: Santiago, Valparaíso, Concepción, Antofagasta
- Colombia: Bogotá, Medellín, Cartagena, Barranquilla
- Peru: Lima, Callao, Arequipa, Trujillo
- Venezuela: Caracas, Maracaibo, Puerto La Cruz, Valencia
- Ecuador: Quito, Guayaquil, Manta, Esmeraldas
- Bolivia: La Paz, Santa Cruz, Cochabamba
- Uruguay: Montevideo, Salto
- Paraguay: Asunción, Ciudad del Este
- Guyana: Georgetown
- Suriname: Paramaribo
- Germany: Frankfurt, Hamburg, Munich, Düsseldorf, Berlin
- United Kingdom: London, Manchester, Aberdeen, Glasgow, Liverpool
- Netherlands: Rotterdam, Amsterdam, The Hague
- France: Paris, Marseille, Lyon, Le Havre, Bordeaux
- Italy: Milan, Rome, Genoa, Venice, Naples
- Spain: Madrid, Barcelona, Valencia, Bilbao, Seville
- Russia: Moscow, Saint Petersburg, Kazan, Novorossiysk, Sochi
- Poland: Warsaw, Krakow, Gdańsk, Wrocław
- Belgium: Antwerp, Brussels, Ghent, Zeebrugge
- Sweden: Stockholm, Gothenburg, Malmö, Uppsala
- Norway: Oslo, Bergen, Stavanger, Trondheim
- Finland: Helsinki, Tampere, Turku, Oulu
- Turkey: Istanbul, Ankara, Izmir, Adana
- Portugal: Lisbon, Porto, Sines
- Greece: Athens, Thessaloniki, Patras
- Ireland: Dublin, Cork
- Austria: Vienna, Salzburg, Linz
- Switzerland: Zurich, Geneva, Basel, Bern
- Czech Republic: Prague, Brno, Ostrava
- Romania: Bucharest, Cluj-Napoca, Constanța
- Ukraine: Kyiv, Kharkiv, Odesa, Lviv
- Hungary: Budapest, Debrecen, Szeged
- Croatia: Zagreb, Split, Rijeka
- Denmark: Copenhagen, Aarhus, Odense
- Slovakia: Bratislava, Košice, Žilina
- Lithuania: Vilnius, Kaunas, Klaipėda
- Latvia: Riga, Daugavpils, Liepāja
- Estonia: Tallinn, Tartu, Narva
- Bulgaria: Sofia, Plovdiv, Varna
- Serbia: Belgrade, Novi Sad
- Slovenia: Ljubljana, Maribor
- Cyprus: Nicosia, Limassol
- Malta: Valletta, Birkirkara
- Saudi Arabia: Riyadh, Jeddah, Dammam, Al Khobar, Jubail
- UAE: Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah
- Qatar: Doha, Ras Laffan
- Oman: Muscat, Sohar, Salalah
- Kuwait: Kuwait City, Ahmadi
- Bahrain: Manama, Sitra
- Iraq: Baghdad, Basra, Erbil
- Iran: Tehran, Mashhad, Bandar Abbas, Isfahan
- India: Mumbai, Delhi, Chennai, Kolkata, Bangalore, Hyderabad
- China: Shanghai, Guangzhou, Tianjin, Shenzhen, Qingdao, Hong Kong
- Japan: Tokyo, Osaka, Nagoya, Yokohama, Kobe
- South Korea: Seoul, Busan, Ulsan, Incheon, Daegu
- Indonesia: Jakarta, Surabaya, Balikpapan, Medan
- Singapore: Singapore City
- Malaysia: Kuala Lumpur, Johor Bahru, Port Klang, Penang
- Thailand: Bangkok, Rayong, Laem Chabang, Chiang Mai
- Vietnam: Ho Chi Minh City, Hanoi, Da Nang, Haiphong
- Philippines: Manila, Cebu, Davao, Batangas
- Bangladesh: Dhaka, Chittagong, Khulna
- Pakistan: Karachi, Lahore, Islamabad, Faisalabad
- Taiwan: Taipei, Kaohsiung, Taichung
- Myanmar: Yangon, Mandalay
- Sri Lanka: Colombo, Kandy
- Kazakhstan: Nur-Sultan, Almaty, Atyrau
- Uzbekistan: Tashkent, Samarkand, Bukhara
- Jordan: Amman, Irbid, Zarqa
- Lebanon: Beirut, Tripoli
- Mongolia: Ulaanbaatar, Erdenet
- Nepal: Kathmandu, Biratnagar
- Yemen: Sana'a, Aden
- South Africa: Johannesburg, Durban, Cape Town, Sasolburg
- Nigeria: Lagos, Port Harcourt, Abuja, Kano
- Egypt: Cairo, Alexandria, Port Said, Suez
- Algeria: Algiers, Oran, Skikda
- Morocco: Casablanca, Rabat, Tangier
- Angola: Luanda, Lobito
- Kenya: Nairobi, Mombasa
- Tanzania: Dar es Salaam, Mwanza
- Ghana: Accra, Tema, Kumasi
- Mozambique: Maputo, Beira
- Cameroon: Douala, Yaoundé
- Libya: Tripoli, Benghazi
- Tunisia: Tunis, Sfax
- Ethiopia: Addis Ababa, Dire Dawa
- Australia: Sydney, Melbourne, Perth, Brisbane, Darwin, Adelaide
- New Zealand: Auckland, Wellington, Christchurch
- Papua New Guinea: Port Moresby, Lae
- Fiji: Suva, Nadi
- Zambia: Lusaka, Ndola
- Zimbabwe: Harare, Bulawayo
- Namibia: Windhoek, Walvis Bay
- Democratic Republic of Congo: Kinshasa, Lubumbashi
- Cote d'Ivoire: Abidjan
- Senegal: Dakar
- Mali: Bamako
- Malawi: Lilongwe, Blantyre
- Mauritius: Port Louis
- Reunion: Saint-Denis
Get a Quote Today for Your Duplex 1.4462 (UNS S31803) Pipe Requirements!
Are you searching for the most competitive Duplex 1.4462 pipes Exporter price or need reliable material for your corrosive process lines? Contact Dipti Metal Industries, your expert Duplex 1.4462 pipes Manufacturer and UNS S31803 pipes Exporter in Mumbai, India, today. We provide full documentation and the best DIPTI® Duplex Piping Solutions.
Important: When requesting a quote, please specify the pipe standard (e.g., A790, EN 10217-7), required dimensions (e.g., 6 inch Sch 40S), and end-use to ensure material compliance.
Duplex 1.4462 Pipes — Frequently Asked Questions
Find answers to common questions about Duplex steel, UNS S31803 pipe price, and its weldability.
Duplex 1.4462 (2205) offers two major advantages: mechanical strength that is nearly double that of 316L, and significantly higher resistance to stress corrosion cracking (SCC) and pitting/crevice corrosion in chloride environments.
Yes, our Duplex 1.4462 pipes are typically produced to meet the stricter compositional limits of S32205 (which has slightly higher Cr and N minimums), making them officially "dual-certified" as S31803/S32205, ensuring acceptance across virtually all projects specifying the Duplex 2205 grade.
PREN (Pitting Resistance Equivalent Number) is a measure of corrosion resistance. Duplex 1.4462 typically has a PREN > 34, which is significantly higher than 316L (PREN ~25). This high value confirms its suitability for chloride environments like seawater cooling systems.
Duplex requires strict control of heat input during welding to maintain the ideal 50/50 phase balance. Too much heat can lead to the formation of brittle intermetallic phases (like sigma phase), compromising the material's integrity. We use certified welders and processes to ensure proper phase balance.
Contact Dipti Metal Industries, Your Duplex 1.4462 pipes Supplier & X2CrNiMoN22-5-3 pipes Supplier
Global export expertise: Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI. We are a worldwide exporter of quality Duplex 1.4462 Pipes from Mumbai, India.