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Duplex stainless steel
we can ensure that the steel we source is tailored to the needs of our valued customers.
Duplex stainless steel line

Duplex stainless steels are a family of stainless steels. These are called duplex  grades because their metallurgical structure consists of two phases, austenite (face-centered cubic lattice) and ferrite (body centered cubic lattice) in roughly equal proportions. They are designed to provide better corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, and higher strength than standard austenitic stainless steels such as Type 304 or 316. They are therefore used extensively in the offshore oil and gas industry for pipework systems, manifolds, risers, etc. and in the petrochemical industry in the form of pipelines and pressure vessels.

Duplex stainless steels Mechanical Property

Mechanical Property


Proof Stress

450 Min MPa

Tensile Strength

620 Min MPa

Elongation A50 mm

25 Min %

Hardness Brinell

290 Max HB

Composition of Duplex stainless steel

Chemical Element Carbon (C) Chromium (Cr) Manganese (Mn) Silicon (Si) Phosphorous (P) Sulphur (S) Nickel (Ni) Nitrogen (N) Molybdenum (Mo) Iron (Fe)
% Present 0.0 - 0.03 21.00 - 23.00 2.00 max 1.00 max 0.0 - 0.03 0.0 - 0.02 4.50 - 6.50 0.08 - 0.20 2.50 - 3.50 Balance

Specifications of Duplex Stainless Steel


Stainless steel sheet


2B/BA/NO.4/NO.5/HL mirror/8K






hot rolled or cold rolled


0.3-3mm or as required


10-1500mm or as required


2000-3000mm or as required


Stainless steel coil  has a good oxidation resistance and intensity of medium temperature. So it is widely used in decoration, sugical instruments, household appliances, cookware. lableware automobile and other industry construction.


5 Metric ton

Delivery time

Within 7-15 working days after receiving the balance payment


 250,000 tons/year

Applications of Duplex Stainless Steel

    Duplex stainless steels are usually selected for their high mechanical properties and good to very high corrosion resistance (particularly to stress corrosion cracking).
    Architecture:Stockholm's waterfront building ,Louvre Abu Dhabi,La Sagrada Familia
    Infrastructure:Helix Bridge,Singapore ,Cala Galdana bridge ,Hong Kong–Zhuhai–Macau bridge and undersea tunnel ,sea walls, piers, etc.  
    Oil and Gas:a wide range of equipment: flowlines, manifolds, risers, pumps, valves, etc.
    Pulp and Paper:digesters, pressure vessels, liquor tanks, etc.
    Chemical engineering:pressure vessels, heat exchangers, condensers, distillation columns, agitators, marine chemical tankers, etc.

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our export country

We are a well known worldwide supply and export Duplex stainless steels in following countries:,Italy, Philippines, France,Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.

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