| 标准编号 | EN 4131:2009 |
| 标准名称 | Aerospace series - Bolts, normal hexagonal head, coarse tolerance normal shank, medium length thread, in heat resisting nickel base alloy, aluminium IVD coated - Classification: 1 250 MPa (at ambient temperature) / 425 Degrees C Incorporating corrigendum |
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| 发布日期 | 2009-04-15 |
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