TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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A790 Duplex Stainless Steel Grades Pipes
The duplex material is a kind of ferrite - austenitic duplex stainless steel,which is integrated conducive
properties both of ferrite and austenitic and provided with higher intensity as well as tenacity.
Delivery Condition:
1.Annealed and Pickled
2.Bright and Annealed
3.Annealed and Pickled+Polishing
4.Bright and Annealed+Polishing
Available Size:
O.D 6-219.1mm
W.T 0.5-12.7mm
L 20 meter Max
ASTM /ASME A789/SA789 ; ASTM /ASME A790/SA790
CHEMICAL COMPOSITION:
| UNS | Chemical , % | ||||||||
| C | Mn | P | S | Si | Ni | Cr | Mo | N | |
| S31803 | 0.030MAX | 2.00MAX | 0.030MAX | 0.020MAX | 1.00MAX | 4.5-6.5 | 21-23 | 2.5-3.5 | 0.08-0.20 |
| S32205 | 0.030MAX | 2.00MAX | 0.030MAX | 0.020MAX | 1.00MAX | 4.5-6.5 | 22-23 | 3.0-3.5 | 0.14-0.20 |
| S32750 | 0.030MAX | 1.20MAX | 0.035MAX | 0.020MAX | 0.80MAX | 6.0-8.0 | 24-26 | 3.0-5.0 | 0.24-0.32 |
| S32760 | 0.030MAX | 1.00MAX | 0.030MAX | 0.010MAX | 1.00MAX | 6.0-8.0 | 24-26 | 3.0-4.0 | 0.20-0.30 |
