| STD | MATERIAL | CLASS | 4.6级,5.6级,8.8级 |
| JB/ZQ4321,DIN3570 | 35#,45#,Q235,A2-70等 | ||
| PLATING | SPECS | ||
| ZINC/DACROMET/RAW | M8~24 | ||
| Manufacturing per Request | |||
U Bolt
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