 | UDC 621.882.6 | GB 8-88 |
代替 GB8-76 | | 方头螺栓 C级 | | Square head bolts-Product grade C |
|
 | UDC 621.882.6 | GB 10-88 |
代替 GB10-76 | | 沉头方颈螺栓 | | Flat countersunk square neck bolts |
|
 | UDC 621.882.6 | GB 12-88 |
代替 GB12-76 | | 半圆头方颈螺栓 | | Cup head square neck bolts |
|
 | UDC 621.882.6 | GB 29.1-88 |
代替 GB29-76 | | 六角头头部带槽螺栓 A 和 B 级 | | Hexagon bolts with slot on head -product A and B |
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