| 美国UNS | K21590 Class 1 |
|---|---|
| 对应标准 | ASTM A989/A989M-2025
高温设备用热等静压合金钢法兰、配件、阀门和零件的标准规范 Standard Specification for Hot Isostatically-Pressed Alloy Steel Flanges, Fittings, Valves, and Parts for High Temperature Service |
| 归类 | 合金钢 |
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