A437 Grade B4B
2023-05-17 18:33:14
来源:钢铁之家
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牌号 | A437 Grade B4B |
对应标准 | ASTM A437/A437M-2015
高温加工用热处理专用不锈钢和合金钢涡轮型螺栓 Stainless and alloy-steel turbine-type bolting specially heat treated for high-temperature service |
归类 | 合金钢 |