Duplex Steel DIN 1.4462 Rectangular Welded Pipes, Duplex Steel UNS S31803 Seamless Pipes Exporter.
Duplex Steel S31803 EFW Tubing Leading Manufacturers, ASTM A790 / A789 Duplex Steel ERW Pipes, Duplex Steel Welded Tubes, UNS S31803 Square Pipes Suppliers.
ASTM A790 Duplex Steel Seamless Tubing Manufacturer, UNS S31803 Round Pipes, Duplex Steel Polished Pipes, UNS S31803 Pipes, Duplex Steel UNS S31803 Black Round Tubes Exporter.
The properties of these duplex stainless steels are achieved by means of having an overall lower alloy content than similar-performing super-austenitic grades, making their use cost-effective for many applications. Meanwhile, we as well offer these pipes and tubes in customized thicknesses and sizes as per the précised requirements given by our valuable customers in international quality of standards.
Duplex Steel S31803 Pipes & Tubing Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 2205 | 1.4462 | S31803 |
ASTM A790 / SA789 Duplex Steel Pipe & Tubes Specification
Specifications : ASTM A790 / ASME SA790, ASTM A789 / ASME SA A789
Dimensions : ASTM, ASME and API
Size : 1/2"NB TO 12 "NB IN
Seamless Pipes & Tubes Sizes : 1/2” NB – 8” NB
Welded Pipes & Tubes Sizes : 6” NB – 24” NB
Outer Diameter : 6.0-630mm
Thickness : 0.5-45mm
Schedule : SCH20, SCH30, SCH40, STD, SCH80
Type : Seamless / ERW / Welded / Fabricated / CDW
Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
Length : Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
Duplex Steel UNS S31803 Pipes & Tubes Chemical Composition
| Element | Min | Max |
| C | – | 1.0 |
| N | – | 0.03 |
| P | – | 0.02 |
| Si | – | 2.0 |
| Mn | 3.0 | 3.5 |
| Mo | 22.0 | 23.0 |
| Fe | – | 0.03 |
| cr | 4.5 | 6.5 |
| s | 0.14 | 0.2 |
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