ASTM A789 UNS S31803 Duplex Tubing Supplier, ASME SA789 Tubes India
Consistent supply for duplex stainless steel tubing requirements.
Supply of ASTM A789 seamless and welded ferritic/austenitic stainless steel tubing
UNS S31803 Duplex Stainless Steel Tubing
UNS S31803 duplex tubing is supplied for applications requiring a combination of mechanical strength and corrosion resistance. These tubes are manufactured in accordance with specified sizes and lengths based on project requirements. Duplex S31803 tubes offer higher strength compared to conventional stainless steel tubing due to their dual-phase microstructure, which provides improved performance in demanding environments. The material composition influences oxidation behaviour and overall service performance, particularly in seamless tubing applications.
Product specification and certification
UNS S31803 Duplex Tubing is specified where resistance to corrosion and higher strength are required. It is designed to perform in oxidizing and corrosive environments and is used across multiple process industries. These tubes are manufactured as per international standards such as ASTM A790 and ASME SA790, using UNS S31803 material grade. Supply forms include seamless, fabricated, and welded tubing based on application requirements.
These tubes are available in a range of sizes, commonly from ½ NB to 12 NB, with lengths supplied as per customer specification. Ends can be provided as plain, beveled, or threaded. UNS S31803 Duplex Tubing is inspected and certified in accordance with applicable standards and is packed in bundles or wooden cases to ensure safe handling and transportation.
ASTM A789 UNS S31803 Duplex Tubing, 2205 Seamless, Welded and ERW Tubes, Cold Rolled and Hot Finished Duplex Stainless Steel Tubing Supplier in India.
Standard Specification for UNS S31803 Duplex Tubing
| Specification | ASTM A789, ASTM A790, ASTM A928, ASME SA789, ASME SA790, ASME SA928 |
| Standard | ASTM, ASME and API |
| Size | Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| Types | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB |
| Wall Thickness | (3 mm to 100 mm Thickness) SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Form | Round Tubing, Square Tubing, Rectangular Tubing |
| End | Plain End, Beveled End, Treaded |
