Luois Metals is your go-to manufacturer and supplier of Duplex Steel Hollow Bars right here in Houston, USA. We pride ourselves on delivering top-notch products that are built for strength, durability, and outstanding resistance to corrosion. Our Duplex Steel Hollow Bars are crafted with precision, ensuring they have the right dimensions, a smooth finish, and excellent performance even in tough environments. Thanks to their unique dual-phase structure of austenite and ferrite, these bars strike a perfect balance between high strength and toughness, making them a cut above traditional stainless steels. At Luois Metals, we guarantee a reliable global supply to meet the varied needs of industries like marine, chemical, oil & gas, and construction.
These Duplex Steel Hollow Bars are made from a blend of chromium, nickel, molybdenum, and nitrogen, giving them remarkable resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. Their duplex microstructure provides nearly double the strength of austenitic stainless steels while still maintaining good ductility and toughness. Mechanically, they boast high yield strength, excellent fatigue resistance, and durability under pressure, ensuring they perform consistently well in aggressive and corrosive conditions.
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.
You’ll find Duplex Steel Hollow Bars being used across various industries that demand superior strength and resilience against harsh environments. In the marine sector, they’re essential for shipbuilding, seawater handling equipment, and propeller shafts. The oil & gas industry relies on them for drilling tools, offshore platforms, and pipeline systems. Chemical and petrochemical plants utilize them in heat exchangers, process equipment, and reactors. They’re also found in construction, paper & pulp, and heavy engineering sectors. With their exceptional balance of mechanical strength and corrosion resistance, Duplex Steel Hollow Bars are a dependable choice for even the most demanding applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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