Ojas Pipes and Tubes, located in Kolkata, India, has earned a solid reputation as a reliable manufacturer and supplier of Duplex Steel Hollow Bars. Their products are known for outstanding strength and durability, crafted from high-quality duplex stainless steel that offers impressive corrosion resistance and mechanical properties. These hollow bars are perfect for use in tough environments, and Ojas is committed to delivering precise dimensions, sturdy construction, and timely shipments. With a focus on customer satisfaction and a strong track record of dependability, Ojas serves a variety of industries, including oil and gas, chemical processing, and marine engineering
Ojas Pipes and Tubes stands out as a leading manufacturer and supplier of Duplex Steel Hollow Bars in Kolkata, recognized for their remarkable strength-to-weight ratio and resistance to corrosion and stress cracking. Made with cutting-edge manufacturing techniques and top-notch duplex stainless steel, these hollow bars are designed for the toughest industrial settings. Ojas adheres to strict quality standards and provides efficient logistics and customer support, making them a go-to supplier in sectors like petrochemicals, energy, and offshore structures, where material reliability and performance are essential
Standards : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 10 mm To 100 mm Dia in
Length : 100 mm TO 6000 mm Length.
Specifications : ASTM A276, A479 / ASME SA276, SA479
Form : Hollow
Finish : Bright, Polish & Black
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| S31803 / S32205 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
Yes, Duplex Steel Hollow Bars can be recycled after use. Their high metal content makes them suitable for reuse in various industrial processes, promoting sustainability and resource efficiency.
Yes, Duplex Steel Hollow Bars are suitable for cryogenic applications due to their excellent toughness, strength, and resistance to brittle fracture at extremely low temperatures.
Yes, Duplex Steel Hollow Bars can be used for underground applications due to their high corrosion resistance, strength, and durability, even in harsh and moisture-prone environments.
Duplex Steel Hollow Bars find extensive use in industries that demand high mechanical strength and exceptional corrosion resistance. They are commonly utilized in offshore oil drilling, subsea systems, chemical processing plants, heat exchangers, desalination facilities, and the pulp and paper industry. Their hollow design is perfect for creating custom components like fittings, shafts, and pump parts. These bars excel in environments that face chloride stress and acidic conditions. Thanks to their durability and resistance to localized corrosion and erosion, duplex hollow bars are vital in high-pressure, high-temperature applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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