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For butt and fillet welding of power plant, heat exchanger and oil refineries such as 9%Cr-1%Mo-V heat-resistant steel.
Specification
| Sizes (mm) | Standard | Welding Position | Shielding gas | Polarity | |
| 1.2~4.0 | AWS A5.28 EN 21952-A EN 21952-B | ER90S-B9 W 62 CrMo91 W 62 9C1MV | F, HF, H, VU, VD, OH | Ar | DC(-) |
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