牌号 | A437 Grade B4B |
---|---|
對應标準 | ASTM A437/A437M-2015
高溫加工用熱處理專用不鏽鋼和合金鋼渦輪型螺栓 Stainless and Alloy-Steel Turbine-Type Bolting Specially Heat Treated for High-Temperature Service |
歸類 | 合金鋼 |
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