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ASTM A789 1/2 Inch S31803 Duplex Stainless Steel Tube
SSDST23 - ASTM A789 1 / 2 Inch S31803 1.4462 Duplex Stainless Steel Tube With High Tensile Strength
Price: From $5500-8000USD/TON
Material: S32205, S31803, 1.4462;
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ASTM A789 1 / 2 Inch S31803 1.4462 Duplex Stainless Steel Tube With High Tensile Strength
Why Choose MTSCO Duplex Steel Tube?
1. Seamless tube supplier invested by MTSCO - Huxin Pipe, a highly reliable seamless pipe manufacturer with 35 years of experience in pipe production
2. Diversified pipe sizes - in addition to the regular sizes, we can also produce 18 metres and 25 metres pipe extensions.
3. Well-equipped production and inspection - plant facilities include cold rolling mills, annealing furnaces, pickling baths, ultrasonic eddy current integration, and physical and chemical laboratories
4. Complete quality control process - in addition to factory technicians, full-time MTSCO quality inspectors are on site before, during and after production.
5. Complete certifications - we have ISO/PED/AD2000 certifications.
The Size of Duplex Steel Tube:
| DN | NPS(Inch) | D(mm) | SCH5S | SCH10S | SCH40S | STD | SCH40 | SCH80 | XS | SCH80S | SCH160 | XXS |
| 6 | 1/8 | 10.30 | - | 1.24 | 1.73 | 1.73 | 1.73 | 2.41 | 2.41 | 2.41 | - | - |
| 8 | 1/4 | 13.70 | - | 1.65 | 2.24 | 2.24 | 2.24 | 3.02 | 3.02 | 3.02 | - | - |
| 10 | 3/8 | 17.10 | - | 1.65 | 2.31 | 2.31 | 2.31 | 3.20 | 3.20 | 3.20 | - | - |
| 15 | 1/2 | 21.30 | 1.65 | 2.11 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 3.73 | 4.78 | 7.47 |
| 20 | 3/4 | 26.70 | 1.65 | 2.11 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 3.91 | 5.56 | 7.82 |
| 25 | 1 | 33.40 | 1.65 | 2.77 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 4.55 | 6.35 | 9.09 |
Chemical Composition of S31803 Duplex Steel Tube:
| UNS Designation | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| max | max | max | max | max | ||||||
| S31803 | 0.03 | 1 | 2 | 0.03 | 0.02 | 21.0 - 23.0 | 4.5 - 6.5 | 2.5 - 3.5 | 0.08 - 0.20 | - |
| S32205 | 0.03 | 1 | 2 | 0.03 | 0.02 | 22.0 - 23.0 | 4.5 - 6.5 | 3.0 - 3.5 | 0.14 - 0.20 | - |
| S32750 | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 5.0 | 0.24 - 0.32 | 0.5 max |
| S32760 | 0.05 | 1 | 1 | 0.03 | 0.01 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 4.0 | 0.20 - 0.30 | 0.50 -1.00 |
What is Duplex Steel Tube?
Duplex Seamless tube is a special type of stainless steel tube that consists of two crystalline organizations, austenite and ferrite. This tube has excellent corrosion resistance and high strength, combining the superior corrosion resistance of austenitic stainless steel with the high strength characteristics of ferritic stainless steel. The advantage lies in the excellent mechanical properties without sacrificing toughness and corrosion resistance. Seamless duplex tubes are commonly used in areas that need to withstand highly corrosive environments, such as the chemical industry, offshore engineering, seawater desalination, and the oil and gas industry. These tubes are also used for applications at high temperatures, pressures and in harsh environments, providing a reliable material solution for the industrial sector.
MTSCO Seamless Tube Production Process:
ASTM A789 Duplex Steel Seamless and Welded Tubing
Duplex steel is a stainless steel that combines two phases, ferrite and austenite, which has excellent corrosion resistance, high strength, high toughness and good welding performance. Seamless and welded tubes of duplex steel are a widely used material in the industrial piping industry, which can maintain stable and reliable performance in harsh environments such as high temperature and pressure, high corrosion, and high abrasion. There are various standards for manufacturing seamless and welded pipes of duplex steel, one of which is the ASTM A789 standard, and the next section will focus on the properties and application areas of pipes of this standard.
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