灰铁铸件 当试棒与铸件间的特殊关系未确定时采用的单铸试棒
铸件关键截面壁厚,英寸[毫米] | 试棒 |
<0.25[5] | S |
0.25~0.50[5~14] | A |
0.51~1.00[15~25] | B |
1.01~2[26~50] | C |
>2[50] | S |
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