A790 S31803 duplex stainless steel tubing is a medium-alloy stainless steel pipe composed of austenitic-ferritic duplex structure, with yield strength approximately twice that of 18-8 austenitic stainless steel. Its PREN (Pitting Resistance Equivalent Number) ranges between 32-33, demonstrating superior corrosion resistance compared to 316 stainless steel tubing.
This material is suitable for chloride-containing environments in industries including petrochemical processing, seawater treatment, energy and environmental protection, as well as applications in:
Oil refining industry
Petrochemical and chemical processing industries
Chemical transfer pipelines
Oil and gas industry
Pulp and paper industry
Fertilizer industry
Urea production industry
Phosphate fertilizer industry
Light industry and food processing
Food and pharmaceutical equipment
High-strength structural components
Specification
Size : OD: 6.0-630mm WT: 0.5-45mm, Length: 0.5mtr-20mtr
Standard & Grade : ASTM A790/ A778/ A789 /A928 /A240, ASME SA790/SA790M Grade S31803, S32205, S32750, S32760, ASTM A182, F51 Pipe and Fittings
ASTM A790 S32205 Duplex Steel Pipe & Tube in Seamless, ASME SA790 S32205 Duplex steel tubes and Pipes in Welded; ASTM A789 S32205 Stainless Steel SMLS Tubes
Tubing End: Bevel end, Plain end; Threaded;
Chemical Composition of ASME SA790 S31803 Duplex Steel Tubes / ASTM A790 S31803 Stainless Steel tubes:
Mechanical Properties of ASME SA790 S31803 Duplex Steel tubes / ASTM A790 S31803 Stainless Steel tubes:
Equivalence Standards of ASME SA790 S31803 Duplex Steel tubes / ASTM A790 S31803 Stainless Steel tubes:
