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ASTM A790 UNS S32205 Stainless Steel Mechanical Polish Pipes are high-performance duplex stainless steel pipes manufactured with precision mechanical polishing to achieve a smooth, uniform, and aesthetically enhanced surface finish. Produced in accordance with ASTM A790 / ASME SA790 standards, these pipes are designed for applications requiring superior strength, excellent corrosion resistance, and an attractive polished appearance.
UNS S32205 is a duplex stainless steel grade that combines the beneficial properties of both austenitic and ferritic stainless steels. It offers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-rich and aggressive environments. The mechanical polishing process improves surface smoothness and cleanability, making these pipes suitable for chemical, marine, oil & gas, and structural applications.
| Standard | ASTM A790 / ASME SA790 |
|---|---|
| Grade | UNS S32205 |
| Material Type | Duplex Stainless Steel |
| Manufacturing Process | Welded / ERW |
| Size Range | 1/2" NB to 24" NB |
| Wall Thickness | Schedule 5S to Schedule 80S |
| Length | 6 Meters Standard / Custom Cut Length |
| Surface Finish | Mechanical Polish (180 Grit, 240 Grit, 320 Grit, 400 Grit) |
| End Type | Plain End, Beveled End, Threaded |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.03 Max |
| Chromium (Cr) | 22.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 3.0 – 3.5 |
| Nitrogen (N) | 0.14 – 0.20 |
| Manganese (Mn) | 2.00 Max |
| Silicon (Si) | 1.00 Max |
ASTM A790 UNS S32205 Stainless Steel Mechanical Polish Pipes provide an excellent combination of high strength, superior corrosion resistance, and refined surface finish. Their duplex structure ensures reliable performance in aggressive and high-pressure environments, making them a preferred choice for marine, chemical, and oil & gas applications.