UNS S31803 Pipes Supplier and Exporter | Duplex Stainless Steel Pipes
Leoscor Alloy Pipes is a trusted supplier, stockist, and exporter of high-quality UNS S31803 Pipes, offering reliable duplex stainless steel piping solutions for industries that demand superior corrosion resistance, high strength, and long-term performance.
UNS S31803 Pipes are widely used in harsh industrial environments due to their excellent resistance to corrosion, chloride stress corrosion cracking, and chemical attack. These pipes provide extended service life and dependable performance, making them suitable for critical applications across industries such as oil and gas, chemical processing, marine, offshore, power generation, and water treatment.
What are UNS S31803 Pipes?
UNS S31803 Pipes are duplex stainless steel pipes that contain a balanced combination of austenitic and ferritic microstructures. This unique structure provides higher mechanical strength, improved toughness, and better resistance to stress corrosion cracking compared to conventional stainless steel grades.
The duplex composition of UNS S31803 offers excellent protection against chloride environments and acidic conditions, where standard stainless steel grades may experience corrosion issues. These properties make UNS S31803 Pipes an ideal choice for applications requiring durability, safety, and reliable operation.
Features and Benefits of UNS S31803 Duplex Steel Pipes
UNS S31803 Pipes from Leoscor Alloy Pipes offer several advantages, including:
- Excellent resistance to pitting and crevice corrosion
- Superior resistance to chloride stress corrosion cracking
- High tensile strength and mechanical stability
- Long service life in aggressive environments
- Good weldability and fabrication properties
- Reliable performance under high-pressure conditions
Why Buy UNS S31803 Pipes from Leoscor Alloys
Leoscor Alloys is a leading stockist, distributor, and supplier of UNS S31803 Pipes from India. With more than three decades of experience, we understand the steel industry deeply. We have huge experience of supplying to all major industries across the world. Our team of dedicated experts with stringent quality policy ensures that we supply best-in-class products meeting and exceeding our client’s expectations. Below are a few quick points about why buying from Leoscor Alloys will give you an undue advantage:
Duplex Steel UNS S31803 Pipes Specifications
Standard specifications for duplex steel UNS S31803 Pipes. If any specification is not mentioned here, you can contact us. We also manufacture and export any custom specification as per clients requirement.
| Specifications | ASTM A 790 ASME SA 790 |
| Dimensions | ASTM, ASME and API |
| Size | 1/2″NB TO 12 “NB IN |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80 |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
S31803 UNS Pipes Chemical Composition
| Grade | UNS S31803 | |
|---|---|---|
| min | max | |
| C | – | 1.0 |
| Mn | 3.0 | 3.5 |
| Si | – | 2.0 |
| P | – | 0.02 |
| S | 0.14 | 0.2 |
| Cr | 4.5 | 6.5 |
| Mo | 22.0 | 23.0 |
| Ni | – | – |
| N | – | 0.03 |
| Fe | – | 0.03 |
ASTM A312 UNS S31803 Pipes Mechanical Properties
| Grade | UNS S31803 | |
|---|---|---|
| Density | 7.8 g/cm3 | |
| Melting Point | 1350 °C (2460 °F) | |
| Yield Strength (0.2%Offset) | Psi – 80000 , MPa – 550 | |
| Tensile Strength | Psi – 116000 , MPa – 800 | |
| Elongation | 15 % | |
Duplex Steel UNS S31803 Pipes Equivalent Grades
| Grade | Duplex S31803 | |
| UNS No | S31803 | |
| Old British | BS | – |
| En | – | |
| Euronorm | No | 1.4462 |
| Name | – | |
| Swedish SS | – | |
| Japanese JIS | – | |
Types of UNS S31803 Pipes
| UNS S31803 Welded Pipes | Duplex Steel UNS S31803 Welded Pipes |
| Steel UNS S31803 Welded Pipes | UNS S31803 Seamless Pipes |
| Duplex Steel UNS S31803 Seamless Pipes | Steel UNS S31803 Seamless Pipes |
| Steel UNS S31803 Polished Pipes | UNS S31803 Hexagonal Pipes |
| UNS S31803 Cold Drawn Pipes | Duplex Steel UNS S31803 ERW Pipes |
| Steel UNS S31803 Hot Rolled Pipes | UNS S31803 Cold Rolled Pipes |
| Duplex Steel UNS S31803 Square Pipes | Steel UNS S31803 Fabricated Pipes |
| UNS S31803 Round Pipes | Duplex Steel UNS S31803 Pipes |
UNS S31803 Pipes Also Known As
UNS S31803 Duplex Steel Pipes Exporter, UNS S31803 Cold Rolled (CR) Pipes, ASME SA790 UNS S31803 ERW Pipes, UNS S31803 EFW Pipes, Duplex Steel UNS S31803 Polished Pipe, UNS S31803 Electropolished Pipe Stockist & Manufacturer,UNS S31803 Round Pipes Stockists, ASTM A790 UNS S31803 Square Pipes, Duplex Steel UNS S31803 Rectangular Pipes, UNS SS S31803 Hollow Pipes Stockholder, Duplex Steel UNS S31803 Hexagonal Pipes Wholesaler, Provider in Mumbai, India
UNS S31803 Pipes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for UNS S31803 Pipes are very competitive.
Please click on the request a quote button or click here to request the updated price list and ready stock information along with your requirement. Leoscor Alloys maintains a stock of all standard items and can export them at best price for Duplex Steel UNS S31803 Seamless and Welded Pipes.
Duplex Steel UNS S31803 Pipes - Industries & Applications
Our pipes and tubes are used in a wide range of applications and various industries. Below are a few of them:
- Gas Processing Industries
- Petrochemical Industries
- Power Generation Industries
- Food Processing Industries
- Chemical Industries
- Oil & Gas Industries
- Fertilizers Industries
- Sugar Industries
ASTM A312 UNS S31803 Pipes Stock Availability
We maintain huge inventories of all standard sizes and grades. Please send us your complete requirement and we will send you the availability with the best quote for UNS S31803 Pipes.
- Huge inventory of all standard sizes and grades.
- Distributors of all reputed origins and manufacturers.
- Strict quality control policies and highly experienced team.
- Strong logistics & delivery channels.
- Modern Infrastructure with huge storage capacity.
- An ISO 9000:2015 Certified Company.
Prominent Countries where we export UNS S31803 Pipes
Exporting Pipes & Tubes to Singapore, Malaysia, Hongkong, Thailand, Indonesia, Taiwan. Other countires includes Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, South Korea, South Africa, Sri Lanka, Syria, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen.
We are one of the top:
- Pipes exporters to Singapore
- Pipes exporters to Malaysia
- Pipes exporters to Hongkong
- Pipes exporters to Thailand
- Pipes exporters to Indonesia
- Pipes exporters to Taiwan









