Complaint
DUPLEX STEEL PIPE & TUBES SPECIFICATIONS | ||
| Specification | : | ASTM A 790 ASME SA 790 |
| Dimensions | : | ASTM, ASME and API |
| Size | : | 1/2″ TO 6′ IN OD & NB IN Various SWG & SCH |
| Specialized in | : | Large Diameter Size |
| Schedule | : | SCH20, SCH30, SCH40, STD, SCH80 |
| Type | : | Seamless / Welded / ERW / Fabricated |
| Form | : | Round, Hydraulic, Etc. |
| Length | : | Single Random, Double Random & Cut Length. |
| End | : | Plain End, Beveled End, Threaded |
| Test | : |
|
Typical compositions and proof strengths of common stainless steels
| Common Name | UNS No | BS EN No | Typical Chemical Composition % | 0.2% proof strength N/mm2 (min) | |||||
|---|---|---|---|---|---|---|---|---|---|
| %C | Cr | Ni | Mo | N | Cu | ||||
| 2304 | S32304 | 1.4362 | 0.015 | 23.0 | 4.0 | 0.055 | 0.13 | 400 | |
| 2205 | S31803 | 1.4462 | 0.015 | 22.0 | 5.5 | 3.0 | 0.14 | - | 450 |
| 2205 | S32205 | 1.4462 | 0.015 | 22.5 | 5.5 | 3.3 | 0.17 | 450 | |
| 255(UR52N) | S32520 | 1.4507 | 0.015 | 25.0 | 7.0 | 3-5 | 0.28 | 0.13 | 550 |
| 2507 | S32750 | 1.4410 | 0.015 | 25.0 | 7.0 | 4.5 | 0.28 | 0.3 | 550 |
| Zeron 100 | S32760 | 1.4501 | 0.015 | 25.0 | 7.0 | 3.5 | 0.25 | 0.8 | 550 |
| Sandvik SAF3207 | S33207 | - | 0.03 | 31 | 7.5 | 4.0 | 0.50 | 0.75 | 700 |
| Surface Finish | Internal Surface(ID) | Exterbal Surface(OD) | |||
| Roughness Average(RA) | Roughness Average(RA) | ||||
| μ inch | μm | μ inch | μm | ||
| AP | Annealed & Pickled | Not defined | Not defined | 40 or Not defined | 1.0 or Not defined |
| BA | Beight Annealed | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| MP | Mechanical Polish | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| EP | Electro Polish | 15,10,7,5 | 0.38,0.25,0.20;0.13 | 32 | 0.8 |
