Sahil Metals, located in Riyadh, Saudi Arabia, stands out as a reliable supplier and manufacturer of high-performance stainless steel products designed for durability and efficiency in tough environments. Among its specialized offerings is the **Duplex Steel Hollow Bar**, celebrated for its remarkable blend of strength, corrosion resistance, and machining capabilities. These bars find extensive use in the oil & gas, marine, chemical, and engineering sectors throughout Saudi Arabia and the GCC.
**Duplex Steel Hollow Bars** are generally produced in grades like UNS S31803 and S32205, showcasing a dual-phase microstructure that consists of roughly equal parts austenite and ferrite. This unique structure grants them superior yield strength—almost double that of traditional austenitic stainless steels—along with outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich or acidic settings. The hollow design not only reduces weight but also enhances cost efficiency in applications where solid bars aren’t necessary.
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 Hollow Bars** are perfect for crafting components such as bushings, couplings, valve parts, heat exchanger tubes, and machined hollow shafts. Their robust structural integrity and corrosion resistance make them particularly well-suited for offshore, petrochemical, and desalination systems, where reliability and longevity are paramount. With excellent machinability and dimensional stability, Duplex Steel Hollow Bars promise long-lasting performance and quicker fabrication times.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sahil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Riyadh, Saudi Arabia
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