Carbon steel blackened joint screw GB798 black joint bolt lifting ring fish eye hole screw joint scr
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| Surface treatment | Oxidation blackening |
| brand | Tianzhuo Hardware |
| product grade | A-level |
| Main sales regions | China |
| Is it a cross-border export exclusive source of goods | No |
| standard | GB798 |
| Material | Plain carbon steel |
| Usage | Rust resistance |
| Thread type | Coarse thread ordinary thread |
| strength grade | Level 4.8 |
| Applicable Industries | construction |
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