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.
Mechanical Property | Value |
Proof Stress | 450 Min MPa |
Tensile Strength | 620 Min MPa |
Elongation A50 mm | 25 Min % |
Hardness Brinell | 290 Max HB |
| 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 |
Material | Stainless steel sheet | |||
Surface | 2B/BA/NO.4/NO.5/HL mirror/8K | |||
Grade | DIN GB JIS BA Al SI ASTM EN etc | |||
Certificate | MTC SGS BV | |||
Technique | hot rolled or cold rolled | |||
Thickness | 0.3-3mm or as required | |||
Width | 10-1500mm or as required | |||
Length | 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. | ||||
MOQ | 5 Metric ton | |||
Delivery time | Within 7-15 working days after receiving the balance payment | |||
Capacity | 250,000 tons/year | |||
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.
| 1 4 stainless steel tubing coil | 301 stainless steel coil |
| stainless steel heating coil | 304 stainless steel coil price |
| stainless steel tube coil | 304 stainless steel coil stock |
| stainless steel tubing coils | 304l stainless steel coil |
| 1/2 inch stainless steel tubing coil | 316 stainless steel coil |
| coiling stainless steel tubing | 316 stainless steel coil stock |
| stainless steel coil roofing nails | 316l stainless steel coil |
| 3 8 stainless steel tubing coil | 409 stainless steel coil |
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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Oil & Gas
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