国外阀门材料常用技术标准 需切口韧性试验的管道部件用碳钢和低合金钢锻件、最大补充试验温度
牌号 | 最大试验温度,°F[℃] |
LF1 | -10[-23] |
LF2 1级 | -35[-37] |
LF3 1级和2级 | -125[-87] |
LF5 1级和2级 | -60[-51] |
LF6 1级和2级 | -40[-40] |
LF9 | -80[-62] |
LF787 2级 | -60[-51] |
LF787 3级 | -80[-62] |
LF2 2级 | +10[-12] |
LF6 3级 | +10[-12] |
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