- sales@rithavpipesandtubes.co.in
- Delhi, India
Home > Duplex Steel > Duplex Steel ERW Pipes
Rithav Pipes and Tubes is a well-respected manufacturer and supplier of Duplex Steel ERW (Electric Resistance Welded) Pipes based in Delhi, India. We pride ourselves on delivering cutting-edge piping solutions that are renowned for their exceptional mechanical strength and resistance to corrosion. Our duplex steel ERW pipes are made from high-quality duplex grades like UNS S31803 and S32205, which blend the advantages of both austenitic and ferritic stainless steels. With outstanding weld quality, precise dimensional accuracy, and impressive durability under pressure, these pipes are perfect for challenging environments. Rithav guarantees that each pipe complies with global standards, making them suitable for use in the oil and gas, desalination, marine, and chemical sectors.
Duplex Steel ERW Pipes generally consist of chromium (21–23%), nickel (4.5–6.5%), molybdenum (2.5–3.5%), nitrogen (~0.14–0.20%), and iron (the remainder). This unique dual-phase alloy structure provides remarkable mechanical and corrosion-resistant characteristics. These pipes boast a tensile strength of at least 620 MPa, yield strength of at least 450 MPa, and an elongation of at least 25%. They exhibit strong resistance to chloride stress corrosion cracking, pitting, and crevice corrosion, while also maintaining good weldability and toughness. Duplex ERW pipes are perfect for high-pressure and corrosive applications where reliability and structural integrity are paramount.
| Specifications | ASTM A790 / ASME SA790 |
| Sizes | 8″ NB to 24″ NB |
| Wall Thickness | 0.5 to 150mm Thick |
| Schedule | SCH 5S, 10S,10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS |
| Length | Single Random, Double Random & Required Length |
| Form | Round, Square, Rectangular, Hydraulic Pipes |
| Type | Electric Resistance Welded |
| End | Plain end, Bevelled end |
| Length | Single Random, Double Random & Cut Length |
| Material | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex 2205/ S31803 | S31803 | 1.4462 |
Choosing Duplex Steel ERW Pipes from Rithav Pipes and Tubes ensures high quality and durability, as these pipes offer excellent corrosion resistance and strength. Our commitment to exceptional service and reliable delivery guarantees customer satisfaction across various industrial applications. Our expertise in stainless steel products ensures you receive a top-tier solution tailored to your needs.
Rithav Pipes and Tubes, one of the largest suppliers of Duplex Steel ERW Pipes in Delhi, India, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
Yes, we offer custom sizes for Duplex Steel ERW Pipes to meet your specific requirements. Our team at Rithav Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@rithavpipesandtubes.co.in.
Duplex Steel ERW Pipes find extensive use in industries where high strength, corrosion resistance, and cost-effectiveness are vital. They are commonly employed in oil and gas pipelines, chemical processing facilities, marine structures, and desalination plants, where protection against chloride-induced corrosion is essential. Additionally, they are utilized in heat exchangers, the pulp and paper industry, and offshore platforms for transporting corrosive fluids under high pressure. Thanks to their excellent mechanical properties and resistance to stress corrosion cracking, these pipes are the go-to choice in petrochemical systems.
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